Fifteen months ago I bought my first BB7210, and feel it's one of the best business tools I've ever used. Battery life was good for at least two days talking 3-4 hours per day or 5-6 days in low use, and the integration of Outlook with the phone was AWESOME. In Dec. 04, I upgraded to the BB7290 mainly for the Bluetooth feature. WHAT A DISAPPOINTMENT! Battery life barely gets me through a day, and the lag time from menu to menu is much slower than the BB7210. The unit is slightly larger and heavier than the BB7210. After using the device for only two days, callers could NOT hear my voice, though I could hear them clearly, and I had a great signal? Cingular is replacing the device; however, RIM will need to make some serious changes for me to be as enthusiastic as I was over the BB7210.