DS or DSi...??

[Kevin]

Please read this thread before responding.

I have thought about purchasing a DS for awhile now. With the Dsi on the market now I was wondering what to get now.... DS? or DSi?

I do own a PSP, so I already have mp3, video and wifi capabilities with it.

I see the biggest advantage to the DSi (IMO) is the larger screen. Would it be worth it to pay the extra bucks just to have a larger screen? Is there something else about the DSi that makes it a "must buy", besides wifi/mp3??

So basically I'm asking for opinions from present or past owners of the DS/DSi to guide me into the right direction so I don't make a purchase I may regret a little later.