Arstechnica and Anandtech are the two most credible sources for unbiased reviews. First, let us see the one from Arstechnica: http://arstechnica.com/microsoft/reviews/2010/10/windows-phone-7-the-ars-review.ars/18 For those impatient, here is their verdict: The platform will not do well in checklist feature comparisons, but when it comes down to human interaction and using the thing, this software is a winner. Microsoft doesn't often get version one releases right, but this time, it has got the release very right indeed. Windows Phone 7 looks great, works well, and is a treat to use. Market success isn't assured, but judged on its merits alone, this is a platform that absolutely deserves to succeed, and I really, really hope it does.