D.M.
My kids love, love, love the Leapster!! It has games on it that go all the way up to like 10-12 yrs old, all the way down to 3-4. Its great, and I think a little cheaper. And since you have twins that matters. We dont' have twins but our two little ones are 1 yr and 8 days apart, so its like having twins right now. We have to buy two of everything!
Good luck!
D.
http://www.formyrugrats.com