Depends, for me I just got a netbook, I could have got a lens but I am really loving the netbook, I got a dell mini 9 from dell on the one day sale day for 180 something and put 2gb of ram and a 8gb sd card for storage, I put a few old games on it like rollercoaster tycoon 1 and 2, sims, sim city, a few emulators, and Microsoft Word, oh and I forgot to mention I loaded it up with windows 7.
I really love it, I get about 3:30 hours with win 7 and it runs very fast, maybe faster than XP, and its alot easier to carry around campus than my unibody mb pro. And if I drop it it won't be more than $200 to fix, you cant say the same thing about the macbook.