It depends on what you want to use it for. If you want an all-in-one media device, the PSP is superior, but I agree with StellarAirman, the games for the PSP aren’t all that great, unless you prefer shoot-em-ups and action-based games. If you enjoy puzzle games, RPGs, etc., the DS lite or DSi would be a better pick. The DSi isn’t a huge leap above the DS lite, but it does have bigger screens, the ability to download games, and a better interface. In all honesty, I can’t tell much of a difference in the screen size (having upgraded from a DS lite), but I do like all the other new features. I don’t miss the gameboy slot because I didn’t play those games anyway, but if that’s important to you then stick with the Lite. At this point, there aren’t any DSi-only games, but I suspect it’s only a matter of time. In my view, if you can afford the latest technology, get it. Otherwise, when they do start making DSi games you might regret getting the Lite.