Let me explain my history on this issue.
1. I used to buy Japanese LD's. I discovered that inevitably US versions became available that were of higher quality.
2. I bought an all-region DVD player, and subsequently bought a number of DVD's. I discovered that the quality was often poor, and...
One reason I shy away from non-region-A disks is that I have had enough experience with buying DVD's and LD's from abroad that were not as good as the eventual US product. It seems wiser to wait and have a choice.