I don't use 'em. They could fit somewhere inside the case if you have a window, but I don't like them on the front panel at all. Everything to do with opinions though...
I always have a case badge on my case, but only the CPU-type one, not the others. I'm not sure I'd bother if I had a really clean, Aluminum case - wouldn't want to ruin the look!
I've got mine sitting on the side of the drive cage, internally, so that they're visible through the window. Are bit-tech going to update their case badges? As I've got several of the old versions, but am yet to come across any newer.
What case have you got? I'd just go with the Intel one myself. The only sticker I have on my Lian-Li PC65 is the AMD64 one.
It all depends on your personality. I don't have a nice case (it's large, ugly and green) but it does have a personality of it's own and the six stickers on there just add to it.
i have an intel inside sticker stuck on the lid of my macbook pro. i was trying to find an old 'designed for windows 95' sticker too, but i couldn't i appreciate irony.
The "Antec Outside" one on my 1030B was nice, the "Bit-Tech" blue one on the black 3000B a bit special, but unless there's a square recess just the right size on the bezel that needs covering up, why bother?
case badges are to computers as bumper stickers are to cars. I wouldn't put a bumper sticker on my Porsche (If i had one) and I sure as hell wouldn't put a case badge on my Lian Li (If i had one). Other than that, go for it.