I would personally go for the s4. It might be plastic and resembles the s3 quite a lot, but it's also more intuitive and offers more advantages than the HTC. Removable battery, intuitive software, better battery life and it's slightly faster (barely noticeable). While HTC is a very good phone, the main reason why I would never buy one is because of the unibody chassis. The one-piece aluminum chassis is glued together. Not only is it bad for the environment, but it makes it extremely expensive to do any repairs on it. As a matter a fact, it's probably cheaper to buy a new phone if you ever have to replace any parts inside. And the lithium battery only lasts 2 good years before it starts to wear down. So you basically have to accept that your investment only lasts for 2 years with the HTC