you can contact this guy, can ask him from where he purchased it ( he said got warranty from KL store )

cheapest one still here
Sihoo M57
starting from RM 879.00
255 5 stars feedback from user
https://shp.ee/zb9gyni

that rm373 seller is a real SUS bro

sounds like too good to be true

rm808 sounds good. 52 feedbacks. consider ok

let us know your experience with the chair once you have bought it!

u gotta go through this thread from page 1 all over again

doing homework is like that one lar.

otherwise just buy both and let us know your experience with em 

Heyyo, I wrote a review on M57 some pages back. You can go to desktop version and find my posts for it... In short, I'd say get V1 if you have the budget.

163-165cm, below 60kg
The seat doesn't sink if that's what you're asking.... I don't have an ergonomic workstation to pair well with the chair, so unfortunately my shoulders/arms do sore a little after a long time.