Two days ago I won a Gameboy Advance SP in an arcade game called "Stacker."  But I know that the SP is an old system now and that the DS is the new and popular one.  I also am interested in getting a PSP.  I would like to keep the SP because it is more portable, can also play original game boy games and gb color games, and doesn't have the dual screen the DS has which I slightly don't like and it confuses me a little.  Plus the games would be cheaper for SP and of course used old games are cheap.  But the DS is new of course and will be getting new and better games for a long time and there are games for it that I'd want to play that aren't on SP.  It's also not that much more than an SP and I could always rent games along with buying them and/or get used ones for both.  Not to mention you can play online with other people on DS.  I like PSP because it can play movies and go online but it doesn't have that many good games and the console and other stuff for it are expensive but games and movies can be rented.  I need some advice...