Lower New York region here (about 20mins north of NYC) and been with Sprint for 6+yrs
Service has its ups and downs depending on what area your in (I live in a county with over 60 small towns very close together) - Some have excellant service, others are spotty at best, while some more upstate have barely any service all together ...
What really annoys me is in certain buildings like my job and unfortunately my apt. building service is very low, thankfully i am able to get calls, txts, etc. but its very low quality service, job being the worst with the Pre being in roam half the time when i take it out to use it - only being able to use the services if i am connected to the Wifi really help and conserve battery -
Drop calls happen every once in awhile in the low signal areas, and i swear there is a Sprint bug with speakerphones, I have never had a call with a friend also on Sprint who didn't break up at some point if we were both on speakerphone talking, the strangest thing, maybe a CDMA thing?