I have the 7250 with VZW and am extremely pleased with voice quality. It is clear and loud and in the last week since I have the phone, people have commented that it sounds as though I am on a land line. I do keep the volume on my end at 100% by the way. The only issue with volume I have had is when connected to a bluetooth device. It seems to default to about 75% and can't be changed. I believe this is a known problem with BT as you can read about in these forums. Hopefully VZW will issue a fix when EVDO is released.