Anyone who's used a S3/S4 knows most of the S-"features" are pure gimmicks that a fairly competent engineer could implement in less than a week. HTC phones are much more sturdy and better designed, IMO.
I was vacationing in Hong Kong earlier this month, and the subway stations were just completely plastered with various 15-foot tall Galaxy posters. Some of the features they were promoting were just laughable - simultaneous photos with the front and back camera composed into a picture-in-picture result? Really?