I currently have a DS Lite with an R4DS. I was thinking about getting a PSP (Slim) as well. Is finding, downloading, and running ROMS on a PSP as easy as it is on a DS? Thanks for your help.
to be honest... I think the PSP things is a pain in the ass to do at first...
you have to see what firmware you have, and if you'll be able to downgrade it first.
then upgrade it with some home made firmware... it involves many steps and CAN brick your system... but after that, it's just as easy as using an r4. you just drag and drop the isos to the memorystick and then you run them from the psp... easy peasy.
BUT, some games might require a firmware higher than the custom one you have, so you have to upgrade it with the newest or wait for it to come.. and then there's the process again, you might brick it... but being careful and searching alot on forums will make the bricking less probably