I've been buying from both regions before as well as subscribe to ps plus for both before.

3 yrs ago I would wholeheartedly recommend psn US. But now and in future better go psn Asia as we are primarily in Asia and it's more convenient. The offering is equivalent to US with exceptions of few games they and Europe get that we don't (Hitman GO anyone?) while we get some that don't (normally jap published stuff). Pricing also equivalent with current exchange rates so don't expect cheap stuff from US anymore. 3 yrs go my ratio spending between psn us and Msia is 90:10. Now it's the opposite and I hardly waste time looking for expensive psn usd cards anymore.

So go for ps Asia. difference is so minimal u won't regret it.

Asia is getting better now. Pls note that some games don't have full DLC lineup like in US or UK. But if you're not into DLC, then you're good to go.