The iPhone, IMHO, was targeted at people who are already macheads. Someday, Apple will wake up and make a product that they can sell to a business customer. A client of mine has a iPhone and it is pretty neat, but since in cannot synch mail with Microsoft Exchange, it is useless as a business tool. I suppose it could POP mail down, but without ActiveSync you don't get all the other Exchange Features. Basically, if they has allowed Exchange support, we would have bought one for every employee in the company.
Good phone, but not worth the dough, IMHO.
I use a T-mobile Wing. It was $312 and the fee (with data service) is 39.99/month. Of course it is our business plan that we have 5 of them on, so for a individual it will probably be more. The Wing is a PDA first and a phone second, but it totally rocks. It has 100% real time sync with our Exchange Server... So not only do I get real time email anywhere I go, I get real time calendar updates, task list, contact info, et all... The phone part is neat too. I can go into contacts, find the person I am looking for and with one tap be dialing them...or emailing them.....or texting them....or chatting with them on Yahoo or MSN. I could go on, but you all might start to think I am a T-Mobile rep, which I am not.
http://www.t-mobile.com/shop/phones/Detail.aspx?device=acc8102d-4506-4eaa-bc2f-9c7b8ec1b1e0