I havent owned a TP2 but I did use one for a day or so and I've owned a TP. The TP2 is more business centric with the mobile office apps and native outlook compatibility. The ONLY reason I would choose the TP2 is if I absolutely needed to edit office and create office docs and/or you're tied to the offices outlook exchange server. The speakerphone setup on the TP2 is slick, but not necessary and the Moment is significantly louder. I loved the WM OS in the stand alone PDA days, but beyond a little recent window dressing the OS has changed little since then. Maybe WM7 will bring WM out of the dark ages, but WM 6.x is over complicated unstable crap. I just replaced my TP with a Moment and I feel like I was released from prison.