I was debating between the Case-Mate Pop & the Seidio Active X. In the end it was the fact that the Pop was available (end of last week) and that it was a combo (soft inner / shell outer) that was a SINGLE PIECE...
I saw youtube review of the Active X where, in places that weren't directly pressed upon by the outer shell (which is a separate piece from the inner neoprene sleeve), it would become loose (Note: This was not the Active X for the TB. It was the iPhone or Dinc, I don't recall). I don't know this happens due to personal experience, it's simply something I saw...
I've had Seidio cases in the past & they were solid, well designed, well made units, and had Case-Mate not had the Pop I would have gone w/ the Active X from Seidio w/o hesitation.
All that being said, I wouldn't trade the Pop for any other case ATM...It becomes one w/ the phone, and the kickstand is unencumbered...which is huge, cuz my phone is always on it, and I'm constantly picking it up, closing the KS, checking mail or text, opening the KS and setting it down again. If this process was hindered at all it would drive me nuts...
my 2 pence...