Nokia 6126 / 6131 / 6133

I read one review of the 6131 that said the bluetooth stereo is actually mono. Is this the case with a standard stereo headset too? I hope not. Also, they mentioned that the interior display does not use protective glass, does anyone feel that this would present a problem? I am interested in getting the T-Mobile 6133 and would like to know if anyone can shed some light on the subject. Here's the review:
http://www.mobile-review.com/review/nokia-6131-en.shtml »