I think it'll always be ASM1 when it's available and if you're Chinese. Followed by ASM2 and lastly ASM3. See below.

If you're Indian, go for ASM3, ASM1, and lastly ASM2. If you're bumi, ASBx.

Note : There are nearly 20b units of ASM1 and ASM2 and 11b ASM3 (if I don't have a memory leak). Once you apply the % quota for your race, there are much lesser units available. Everyone 1malaysian citizen can buy/sell ASM1.

You mean recently or in the past? Recently everyone say ASM1 easy and ASM2/3 very difficult. I don't know because I'm focusing on ASM1 in case totally cannot buy again. I'll go back to ASM2/3 when ASM1 cannot be bought.
Promo bundle is very little woh. like 20m units only. It's nothing compared to ~20b units

Besides, for people who bought the bundle and need 1money, it's likely they sell a fund that they're not making loss than one that is at a loss (due to commission).