I've got the hTC and it is a lovely phone and I've had no problems connecting to B&M on my GPA. That said I don't use the text reader (don't use texts much).
I found the phone really easy to use and have downloaded some great apps, mostly free ones. The app market place is a bit rubbish but you soon get used to it.
I've used the built-in sat nav in the car successfully although it doesn't give all the info that I get on my Garmin.
I used the sat nav in walking mode with street pics last Saturday night to find my way round an area I'd never visited before. Useful but ate the battery.
The Kindle app from Amazon is good but don't download Angry Birds unless you want to spend too much time on a game. Completely addictive. Still only in beta but I was determined to get 3 stars for every level. Can't wait for the full version to come out, although Halo Reach is taking up my time now.
Battery life is average for this type of phone. Reckon on charging daily. I keep mine topped up via the usb on my work computer.
Highly recommended, but I'd buy it from T-Mobile or Vodafone so that you can get the Android 2.2 (Froyo) update. Or just buy it sim-free.