I had one of these on my GALAXY S3 & it's a quality product,works well w/o the overheating that you may get w/other battery cases.
If you're seriously considering getting this,I HIGHLY
recommend that you visit BEST BUY & actually take it out of the package & get look/feel before buying it, vs. waiting for an on-line deal & buying it sight un-seen.
This case adds more bulk/size than your typical case & those that are averse to the increase in size/weight will not want to spend the $ just to find this out after the purchase.
I myself won't mind the added size,but,w/all the great battery life reports from those who've chimed in on the user review thread,I'm holding off unless I find the need for it.