Miles dependent, sounds amazing! Qatar fly from BKK - KUL, which is about 2/3 the price of TG or MH on this route, so next time I need to do this route, i'll definitely be using Qatar. It is only 6,000 THB in Y roundtrip.
One remark I have is their f/flyer program, it allows you to pool other family members earning into your a/c, which could be a big plus for some.