I have had my original ds ever since it first came out (paid full 200+6%tax for it, $212), but I think it is the most perfect time to update to the DSi LL, read it will be $220 here.
Longer play time than the DSi, bigger stylus and screen, seems all good to me.
But to kind of get back on topic, if I were to have had bought a DSi, I wouldn't regret it, I would have 3 DS systems, if I go over a play time on one DSi, I could use the other, then if that goes, then my regular ds, and the same if one is getting repaired.