In Japan or in the US/Europe ?

How many people as a percentage of total rpg players own the handhelds ? A DS or a PSP ?

I have an old gameboy advanced but I haven't bought new games in several years. If I find out about an older game I want that will work on the advanced I can go to a used game store or a pawn shop and look for the game.
I don't feel any need to buy a new PSP or a DS.
In my view they brought the DS out too soon after the gameboy advance.It made the advance obsolete too quickly and seemed like a move made to take advantage of the fans with a higher priced system.

I wouldn't buy a PSP or a DS to play handheld versions of FFV or VI when I can still play the old versions of the games.

If others disagree that's fine.Shrugs.