D.L.
Hi S.,
I purchased the V.Smile for my daughter almost 3 years ago and we have never had a problem with it. Last Christmas, I also purchased the portable since she liked it so much. I liked the Leapster as well and I think my decision was based around the age categories of the games (I didn't want her to out-grow it in a year like some toys) and the ease of use. The V.Smile seemed to have more games at the time and several age categories. I am still growing her library of games and she still plays it!
Go to both websites and look at the games. See how may years of use you will get out of it. Also look at features. The V.Smile has add ons like the art desk and the dance pad for active play. You can buy an A/C adapter to eliminate batteries. And the portable has a battery pack that you can put in it to recharge. I think I paid $7 on sale at target.
I hope that helps. I know I wrote a lot, but it's good to really check these things out since they are pricey and desirable toys.
Good Luck,
D.