The service and their skills to fix my Samsung phones are great....9/10 times. You have a problem, they can probably solve it for you. But you have to KNOW what you want out of the phone and tell them in advance and maybe they can give you discount if you ask/negotiate for it.
I got my Galaxy S2 LTE, Note 2 and Note 4 fixed here. Shattered screen, camera lens, S Pen replacement, and of course cases.
The last time I visited I needed to fix my shattered camera lens. They fixed it in about an hour, but noticed it has some dust particles still stuck.....