But seriously, I'm starting to have doubts on Samsung update and services pace. You see, even now Malaysia still hasn't get any ICS update for SII, either g or non-g. I'm wondering whether SIII will get the same treatment for Jellybean or not. 

WRONG.

if you want many OFFICIAL support go to htc,you will get maybe 2 major update,

if you want many DEVELOPER support go for samsung, you will get many custom rom without hassle, sometime will surpass 2 3 major update. my S1 can get until ICS, official support will come, but always late. but there is always leak firmware to test,

BOTH is high end

if you feel adventurous go with samsung, many developer of custom roms for sure, leak firmware from all over the world can be flash to your phone, so if oversea get it, you will also get it. no need to wait asia support.

if you more to i dont care about latest update, i want a phone that just can be use. go for htc, you get the satisfaction of great and sleek design of the phone and also the UI of sense