HTC one vs Samsung galaxy S3
I think you should decide between HTC One and Samsung Galaxy S4 instead of S3. I would've chosen HTC One. Samsung is not a bad phone but I think that HTC have more quality. Feels like it won't brake so easy. As I do not own any of these I can't really say more. Maybe you have a store nearby where you can test them?
The One is the newer and more advanced phone. However if you mean the S4, personally I prefer the S4 and I think it has better system specs, but otherwise they're pretty much the same (other than the look of them.)
S3! I have Samsung and I've played with HTC. Samsung S3 is way better.
I prefer s3 is too good...I go for samsung phones