We got 4 person in the villa, so we have to wash 4 times.

But then we have successfully done it on a kimchi brand.

A WM bought is to use, now I understand why your WM does not vibrates after 2 years, because it is just for cosmetic purpose and to boast how "superior" it is compare to other Japanese brands.
Wash 4-6 times a day is not considered over used. My house when during new year time can wash up to 8 times and it still last me for 8 years.

A WM won't safe water at any 1 time, if you are talking of saving water, hand wash is the best for you. Want eco friendly? Don't use air cond as it generates CO, CO2 and other acid rain causing agents. Use detergent will polute the water

Then just a cheap top load and case close.

You no need to worry on the placement of your WM, no matter how you do, after few years the door alignment will go also.
The door are quite heavy(for the door holder), unless you want to keep it closed after washing, then it may last longer.
And it is also depending how you use the WM, like in my place, we are using it daily and wash 3-4 times.
The WM starts to give high vibration and the door can't align properly sometimes. Still, it is not our property, spoil ask company to change.
I still prefer top loader because of this.

Better use those water ruler to measure.

6.5KG can or not? If yes, then I can say don't take kimchi brands. We trash it for 2 years and now giving high vibration and it stuck once, just stopped at 35 minutes for no reason. Have to restart few times only can.

Any brand from the country that whacked Pearl Harbor will do

I'm using Hitachi top loader now, working for 8 years.
Now it don't really able to spin heavy load due to alignment problem.
So I need to set such that it will wash and rinse but don't spin, some manual work needs to be done for this case.

Front loader?
Never bother to consider it, expensive and cannot be trash
We just trashed a 2 year old kimchi front loader. Nothing much we did, just everyday use 4 times.

Safe money? Let's see, a 12KG top loader with rm1200-1500 can get while front loader easily rm1500 and above.

Yup, you are right on this. Comparing my Hitachi 10KG top loader that worked for 8 years with repair cost need rm300(bought rm1000), each month using 30 units(30*0.218 = rm6.54 of electric) and water about 5m3, that's rm2.50 of water bill.
rm1300+rm627.84+rm240=rm2167.84 for 8 years.
A 10KG front loader 8 years back need about rm3000-4000, not yet calculate utilities bill cost.
The math tells me that a top loader total cost are cheaper

For me and my family, yes.

I only look for basic type and those small electric shops.
If you are looking WM that having fancy functions, then sure it cost rm2000-3000.

7.3kg are odd size, can't suit family usage.
For family usage, 10kg is a good start.

Simple, want it to last long, the most simple type(but make sure you can select water volume).
More fancier the WM, more expensive to repair, and usually the circuit board will fail faster.
Best is survey from the chain stores then buy in those small shops as you can bargain. Setback is cash terms and can't do installments(have to charge 5% extra).

This is quite a general view and quite bias.
Just spend some time to check both of the top loader and front loader for the specs. To get 1l less of water usage, you need to pay extra rm1000.
So getting a front loader to "safe" water won't stand. Not to mention when the rubber seal fails, you get flash flood nearby.

1l won't really matters, as savings from other places are more obvious.
Using any type of WM won't safe water in the first place, hand wash yes.

Nope, front loader never and forever will not be 1 step above hand washing.
And front loader waste more energy also, as for 10 year run you need to send it for service. Considering the manual work required. Squad down also very bad for health.

Using 1 right now and it has more problem than my old top loader.