I have no idea which one I'd prefer. I still like the size and portability of the GBA:SP and I might go with that. But both the DS and PSP are nice. They have great features. I think what would definitely sell me on the PSP is if someone comes up with a way for us to burn our own movies from DVD to PSP-compatible minidiscs. I hate the thought of having to buy movies in yet another format. Plus, I've already got my iPod for music. So, it really just comes down to games and while the PSP has some sweet titles in the works, all my old GB games should work on the DS which equates to little necessary upgrading.