I'd say get the one with the most memory you can afford. You WILL find something to use it up I guarantee. Adding more memory to the iPAQ is quite expensive since it's all soldered onto the board. And adding expansion packs make it quite bulky.

I've got a 3630 and I think it's great. The battery is dead though because I forgot to flick the little battery switch to off when I went on holiday. I'll have to send it to Compaq to repair.

- Trevor