All Stars is the only version of SMB1 that I've ever been able to beat. There's one jump in the NES version I just never have been able to manage, but I did on All Stars.

I was also super hyped at the time to be getting the "real" SMB2, but in hindsight I like the "USA" SMB2 better.

These days, I'd probably play the GBA versions of 2 and 3 over the All Stars versions.