As a huge Killer Instinct fan, I'd have to say I found the SNES version far superior, except for the obvious graphics, better controls and a smoother game.
However, Blast Corps is what got me wanting to own the damn console, just the sheer pleasure in a game where the entire game is based around smashing things.
If you don't know it, you work for a demolition company, and a truck has gone haywire, carrying a nuke, you need to clear the path in front of it so it has nothing to crash into, this involves levelling whole towns with your bulldozer or other wrecking vehicle.
Just stupidly fun stuff from the real glory days of Rare (tho I might argue the second coming of Rare as I remember them for their ZX Spectrum/C64 games like Sabrewulf.
I found a N64 at a car boot sale, in an offical N64 carrycase, and it came with the expansion pack, 3 controllers and Mario 64 and goldeneye and a couple of other games, for a lousy £20.
I figured even if the console didn't work, I could probably ebay Goldeneye and Mario for that much, but as it was, it all worked fine. Bargain!