As i've said nothing's future proof. No drivers=64-bit useless. But since amds are cheaper anyways, wth right? Of those three, believe L2000 isn't a good choice because of the cheap plastic look. V2000z is okay. R4000, not too much battery life, but fast. So just suggest v2000z. If you like 15" screen, alternative to l2000 would be m2000z.