I was surprised by the performance I've gotten so far out of my Motorola v551, after reading the reviews here, I was a bit worried about the new purchase. The first charge lasted a full week (7 days!) with light usage (some Bluetooth transfers, a few calls, a few photos, even a couple videos). I did turn it off at night, because of the recommendations in other reviews. Granted, I used it pretty lightly, but it lasted that whole time. No dropped calls.Perhaps they've updated the battery/firmware? Or perhaps it's a model-by-model quality issue.Anyway (knock on wood), mine's been great so far. I like the camera (my first camera phone); voice quality and reception are excellent. The menus took a little figuring out, mostly because I'm used to Samsung menus. If I were redesigning the phone, I'd swap the two top buttons that are used for almost every menu action -- the left one should be the "yes" or "change" button, in my mind -- but I've already adjusted pretty quickly.One important note: This phone worked out of the box with Tiger 10.4.1 and iSync over Bluetooth. However, be careful with the iSync settings (I managed to wipe out my address book numbers when the phone overwrote my computer's information -- real nice). But I could also easily transfer an .mp3 file over Bluetooth to act as my ringtone.I recommend this phone based on my own experience. I also purchased the BodyGlove (for v440) case and like that too.