Hi,
I had the contour showcase on my iPhone for the last 4 months with a bestskinsever on it. I was happy with the setup but knew I'd never get the phone out of the case without breaking it. the showcase was nice because it was "grippy" and tough, it felt like it would handle a fall or two.
Last week I got my wife an agent 18 black case I managed to get her phone out of the contour showcase without breaking it, but took off the back of the bestskinsever. within a week Ive got myself a clear agent 18 case (I also took off the back of my bestskinsever skin).
contour positives
sturdy
rubbery grippy
can use entire bestskinsever (but you probably cant ever get the phone out again)
Contour negitives
heavy, and "bulky"
the clear plastic on the front by the home button and ear hole get dirt under them , and with the bestskinsever case I couldnt get the phone out to clean it.
Agent 18 case pros
small compact and light
looks nice and clean
small compact and light
agent 18 cons
No grippyness when you hold it
might not survive many falls
can only use the face protector skin, not the entire skin