Am considering to buy a PDA PHONE.

Here's a review and comparison of dopod d810 from cnet: http://asia.cnet.com/reviews/handhelds/0,39001703,39272188p,00.htm I wish I could get my hands on one. It's a little bit pricey. I currently own a dopod 818 Pro. You should go for a pocket pc (Microsoft powered) phone. It has a lot of features and software available for download. The only thing lacking from my phone is 3g.

I love my treo 650. As a realtor I can browse listings on the go, even write contracts on the documents to go program and print with my battery pack printer - IR connection from treo to printer. Its wonderful. Its my calendar, web, phone and the E-Key for the new electronic key boxes on listed houses all in one.

You can go for HTC Advantage. Personally, it's the best full-featured pocket pc phone. It has all the connectivity options, 8GB harddisk drive, qwerty keypad and my favorite, tv-out. I'm planning to buy one myself.