Depending on what you comparing now?
LED ? then few parameters for measurement I would say

1. Lumen/W which translate to efficacy
2. dollar/lumen which means how much you paying for the brightness (in some case, u need this comparison)
3. Power factor - should be 0.9 as it is electronic item. Exception for candle type LED
4. rated lifetime - consumer range usually rated at 15k~25k hrs which would give you the performance over at least 3 yrs of usage
5. CRI - i personally think this is important which gives you a better quality of light


there are few more parameters but it should be sufficient for now.

I see, but what does the CRI mean??
We got those warm light and cool light. How to choose where to use which?

Sorry no mean to interrupt this price list.

CRI = color rendering index.

Google it.
Should be buying those at least 80 and above.

The price will be expensive. And I don't think average person will see it as important.

As long as they see the red won't turn into blue.

CRI is a light color shine on the object color and how accurate the color you see on the object.

Different white color shine on the object will produce different color accuracy.

You guys are awesome!! I roughly estimated, a double storey with 4 bedrooms and 4 bathrooms, easily need about 50bulbs, assuming RM40 each, that gonna cost me RM2k!

Try using E27 light bulb base in anywhere possible. E27 LED bulbs are the cheapest in terms of dollar/lumen/versatility unless you want to pay more for aesthetic reason.
Giant currently offering 10w 810lm AREX Eco branded E27 LED for RM10.
You can also try out MR DIY LEDs, been using a 3w MR DIY for night light at the stairway approx 10 hours a day for more then a year now.

Thats good news to me, but my house still need another 2-3months..

Do you think if one bulb is enuf for one bedroom? Currently estimating about 4 bulbs being required.

Should be more than enough for a typical DSL room if you put in 10w x 4.
Go Giant or MR DIY buy 4 x 10w LEDs to test it out your self at your new house before you draft your lighting plan.

Depending on how you look at it. If im paying 4~5 times over thr standard CFLi, of course need to have a better specs.

Depending on the brightness you need. Elderly needs more lights where as im used to have minimal light at home. Just so it is rather cozy.

Go for E27 screw type of bulb if you have no confident in certain brand. You can change the bulb anytime rather confined to a certain fixture.

Zhaga compliant fixtures has yet to be taken momentum and will take a while before all the component can be interchangeable

General guide that i used

Location Illuminance (lux) 
Living room 50
Bedroom 50
Reading room 150
Hall/landing 150
Study 300
Kitchen 300
Outdoor entrances 30
Corridors 100
Restaurant 100
Entrance hall 150
Stairs 150
Public house bar 150
Casual assembly work 200
Rough/heavy work 300
Filing room 300
Classroom 300
Medium assembly work 500
General office work 500
Shop counter 500
Supermarket 500
Laboratory 500
Kitchen 500
Computer room 750
Drawing office 750
Fine assembly work 1000
Precision work 1500

Can't remember the source d.

This post has been edited by codeiki: Nov 19 2015, 07:48 PM

1 lux = 1 lm/m2
i read in my bedroom, so my bedroom brightness is about the same as study room when turning on all the lights
total lm = 300 lux (study room) * bedroom size in m2 (22.84)
total lm = 6851
if you planning to get an even light in every corner probably 6 bulbs and each about 1141lm..
It's a rough guide i used to follow

This post has been edited by codeiki: Nov 19 2015, 07:50 PM

You can select a range of brightness that you needed. Let say bedroom, most other time is about 50 lux
total lm = 50 lux (bedroom)* bedroom size in m2 (22.84)
total lm = 1142

So the bedroom brightness is range from 1142- 6851lm
Then you can put switch to turn on number of bulbs you need. 1 switch for 2 bulbs, you will get about 100 lux (1 switch on), 200lux (2 switch on) and 300 lux (3 switch on)

Thanks for all the kind advice and sharing!!

But I'm unfamiliar with those jargon. Is my below interpretation correct?

A) Lux = lm = lumen ? If I need 800 lumens, I can either pick a bulb with 800 lumens, or 2 bulbs with 400 lumens each?
B) E27 is the bulb that we can easily screw them using bare hand? and easy matching the holder?
C) Higher lumens will be required for area which one wanted to see thing clearer, such as study room?

Any LED bulb dimmable? Brand? Shop? Price?

You can request the shop to change the driver for you. Driver is the one control it.

Is there any review for MR DIY 9w e27 led bulb?
Its so cheap just RM11.90.
Its half the price of branded led bulb...

Quoting this for future reference.

Which LED brand is cheap and reliable nowadays?
Few shops introduced Goodlite, Elegantz, GE, and of course budget China LED (I wonder can last how long?)

I tried this in my dining hall.
1. I changed all 4 E27 sockets to LED bulb at the same time (all bulb has same luminance, will undergo same amount of switching on-off and usage time)
2. The 4 LED bulb that I used is - 1 midea, 1 philips, 1 osram, 1 mrDIY with the price range from 11+ to 28+
3. The color is not much differencecomparaing each other, if you are didn't pay very much attention to it.
4. After 6 months usage, all except one is stop functioning. The brand started with o.... (this i get a replacement as it still under warranty)
5. The rest of the LED bulbs still has the same amount of luminance/color comparing each others.
6. The test is still ongoing.

The test is limited by one random LED bulb which may not be representative of the whole product. I can only conclude that the cheaper brand is not worse than the more branded one.

This post has been edited by codeiki: Jun 26 2016, 03:54 PM