I also had a Galaxy s3. I recently upgraded to the desire 816 too because my s3 bricked. The Htc skin is so much more smoother than touchwiz. It's so smooth and slick. The Desire 816 is also much faster than the s3 and doesn't stutter or lag like the s3. As far as the screen goes the s3 has better color reproduction and is more vibrant than the desire, but the desire still has really good screen quality and is still sharp. As far as battery the desire can last me all day with heavy use and when the phone has the screen off the it uses like no battery, it's much better than the s3. The speakers are amazing and are the best I've heard from a smartphone. The camera is ok, it's not bad, i personally like the s3 camera more. In all HTC has a really good quality phone in software and hardware and has Samsung beat in many aspects. Also if you going to purchase the Desire 816 purchase it on amazon or QVC or HSN it's around $200 on those sites opposed to $300 on Virgin mobile. I hope this helps