Let me first begin with: Yes, there is a problem with the reception. coz thats what everybody asks whenever they see the iPhone with me. But it’s not a big problem, calls don’t get dropped everytime I use it, actually I had a call drop only once, so far.
Anyway, Hamad ordered 2 iPhone Bumper cases for him and me and we just got them yesterday. The case works perfectly.
1- solves the reception problem 100%.
2- doesn’t bulk up the phone, actually it is unnoticeable.
3- every button is accessible.
Covers the silver line around the iPhone.
All in all I’d say go for Bumper coz it does what it is made for very nicely.