I have it, I really like it. I came from the 5600 which was an OK smartphone, but lacked the refinement of a decent phone.
The 2125 with Smartphone 2005 is very nice. I wish it had wifi, but not a big deal.
Screen resolution is amazing and the phone seems has much better reception than the 5600.
I use it everyday at M$ and it syncs up all my exchange mail perfectly. It's a must have for a person on the go or in meetings. I run a 1gig miniSD and use it with my Rhapsody to Go service, works great.
Any other questions?