Just had a play with my Sega Saturn and Dreamcast. Both gorgeous and like brand new in boxes!
Is it me, or are DCs really loud?
I still have my Saturn somewhere, but I really wish I had kept my 2D beat 'em ups that I had begun collecting.

SFA2, X-men Children of the Atom etc. Best platform ever for those.

The PS3 store versions I've tried seem to be based on the PS1 versions of the games, which are distinctly poor in comparison.