The first one, black - a bit more masculine, was for me, whilst I'd had the phone. I upgraded my phone to another HTC (cover obtained from MobileFun) so decided to pass my Sensation (!!) to my wife ;-)
The black one I had initially, had 'done its job' so I got the blue flip to cover the phone for my wife.
The colour is far more suited to her PLUS - they are simply damned good cases, very fairly priced.
The Blue cover is more feminine than the black one - BOTH covers looking really good, protecting the phone really well. The black one kept my Sensation protected within a busy vehicle workshop. The phone remains 'as new'.