I absolutely love steelbooks

, only in the last year or so have I really started collecting them seriously. Unlike Vhal, I'm sticking mainly with 360 cases (ie G1) although I do have a few PS3 & Blu-ray releases. I keep them in plastic slipcases as they can sometimes scratch easily.
It can be a costly exercise especially for the rarer cases and for me I only source cases where I actually own the game as well.
I tend to avoid stickerbooks personally as I find them inferior, but sometimes there is no other alternative. The dead giveaway is the silver border surrounding the artwork.