Since my contract with AT&T- iphone 3GS recently ended, I thought of going for Andriod phone. I bought Samsung Galaxy S2 from wireless.amazon.com for $149 (no tax) with contract. Some tech details: dual core, 1.2 GHz, AMOLED, 4G, 1080p video, 8MP camera etc. I have been using for approx month. Overall pretty impressed. Speakers and Navigation is much better than Iphone. I would highly recommend this phone and buying from amazon since it is cheaper than AT&T website and no-tax.
More details: http://www.techradar.com/reviews/phones/mobile-phones/samsung-galaxy-s2-930907/review
I have heard good things about this phone too.
But I think one of the problems with the Android Smart phones is that the battery drains quicker than iphones. Is the battery fine??