I have. In my experience, the white one stains easily while the black one has poor quality on the corners of the I-frame. Please take note those were back in 2008, I don't know if they've changed the quality. A long discussion can be found here.
neo is nice but other cases will outlast this one - the middle piece is very thin and i had the bottom lip break on mine - but it is a nice looking case
other options
incase slider
speck candyshell
otterbox products