then you should probably go with the gba version. I mean if you're not looking for it to collect but just to play...there would be no reason to get it for SNES.
A. The snes version is more expensive
B. The gba version according to you has extra content
c. Either way you're playing it on tv
D. The gba version is newer so is much less of a chnace then the save file going to crap

So yeah go with the gba version