NYC Phone Reception

[poingjam]

I'm about to get a cell phone again. I used Metro PCS before because I was broke, but now I actually need something good for work, so I'm looking to get a Droid with an unlimited data plan.

Can anyone comment on the reception of different providers in the NYC area? AT&T and Verizon are both ruled out as they don't offer unlimited data. Cellreception.com is listing Sprint as a good option (and Nextel which seems to be owned by Sprint), but I've never heard a good word about Sprint. And T-Mobile, which I heard was good years and years ago, seems to be dead last now.

Also, can any Droid owners recommend stable, powerful phones, preferably with slide-out keyboards?