I've used PALM products for years. I purchased the TREO 650 from Cingular a few weeks ago after a HORRIBLE experience with the T5. I LOVE the Treo 650. It's great as a phone, and just as great as a PDA. It's divine to have both tools combined. I've had the Treo 650 for a few weeks now, and have loaded it with 3rd party software to keep me better organized, including a program that lets me use my beloved "grafitti 1." Because the phone memory is limited, I purchased a 512 SD card and this is where I put my 3rd party software and office documents. I haven't tried games, not much of a player. I have tried bluetooth and it's great -- buy the TREO 650 headset from Palm, the Motorolo set I tried didn't work on my TREO even though it said it was for all bluetooth devices -- the Palm brand is the same price as the other brands. You just have to order it online. If you want a modern, reliable organizer and telephone combined to help you efficiently manage your work and personal life, buy the TREO 650. It's simply the best!Here's a note to you who are switching to Cingular. The Palm Treo 650 is a great device. Cingular's customer service stinks. If you must talk with Cingular, the best, least stressful route is to chat with a customer service rep online. If you visit a store, call a local store on the phone, or call Cingular's toll free number, you'll waste a lot of time and patience. I switched to Cingular as a former AT&T; customer and sorely regret not shopping around for a vendor who has better customer service. Cingular is horrible, but if you have to use them, once you get past the customer service involvement, you will love your TREO 650.