I have both an iPhone and a Blackberry 8800. If you plan on doing a lot of typing on your PDA, then a BB may be a better bet. I have all my personal email go to the iPhone and it works great for text messages and very short emails. Anything longer is much easier to type on the BB. If I could only have one device, I suppose I would sacrifice the typing and go with the iPhone, but I do type a lot of emails on the BB when traveling and it is just easier to knock out long messages.