Thanks all Sifu for the advice
I also been check on the price for normal service on those Bike i get shock when i heard those price

1 - ER6 Rm 250 - 350 Include (EO,Air Filter,Oil Filter and Plug)

2 - Z800 Rm 500 - 600 Include (EO,Air Filter,Oil Filter and Plug)

So i already make up mind will stick on ER6f since i going to use it daily to work. The price with my current 250R the parts and service really not that far i still can manage.

If for Z800 i use it daily i think it will kill my wallet coz i will service my bike every 3 months when reach 4000KM. Service + Installment really can kill me.
Thanks all but i hope still got more advice from all Sifu-Sifu

Cheers

Hi Sammich
For Ninja 250r got 2 version carburetor and fuel injection

carburetor - easy to take care only hard on modification

fuel injection - easy on modification.
My version are carburetor brought it in 1st batch here are some service and parts price
Normal Service - Rm 200 or below ( Using Semi-Syntactic and oil filter only) i service every 3500km - 4000km

Plug - Rm 50 per pc x 2 (Twin Cam mah) using iridium (Can last at least 8 months till a year)

Air Filter - Normal is around Rm 30 - Rm 50 normally need to change everytime u service but i advice change to K&N Air Filter it can last till 100000 KM before you replace a new one or clean it cost are Rm 350 - Rm 400

Rear Tyre - Speed Demon 140/17 (Rm 380 - RM 450) include installation
Front Tyre - Speed Demon 110/17 (Rm 350 - Rm 430) include installation 

Spocket - Fullset EK O ring ( Rm 450 - Rm 550 ) usage of the spocket depend u takecare or not by yourself normaly can run till 18000km at least, my personal record 26000km just start nosiey.
Brake Pad - Rm 100 ( Ori Nissin)
All Sifu please correct me if im wrong.

By the way yesterday my friend poison me with Z800 give me a test drive 

Now i lost my interest on ER6f and fall in love with Z800    How ar? 
Thanks
Cheers