new PHONE?

I am considering getting a new smart phone. I've wanted a PDA for quite some time now and it costs about the same to get the smart phone. I have a contract with Alltel and htye have the HTC PPC-6800 which looks to be an awesome phone but to buy it with them its nearly $600. On ebay they are going for about $200-300. Anyone have expericne with this phone? Any comments? Just trying to see if it would be worth the cashola

Thanks