well, i used to be into unusual cases ... milliondollarpc really got me going.
http://www.million-dollar-pc.com/
but after completing a build in a modern, standard midtower case (a Define R4), i wouldn't want it any other way.
my main is a HAF XB (the cubic one), and it's not easy to access; i need to replace a SATA cable inside, i would have to uninstall half the components. (i just threw out my DVD instead)
and while it looks nice the first 5 times you look at it, now it just looks like something that holds my hardware.
i'd rather have something that is build-and-maintenance friendly, nowadays.
the coolermaster ammo 533 i had previously was a piece of junk: sharp corners, the chassis bent, it was heavy, fans were impossible to maintain..
but if you get your hands on a R4 or R5 you'll see what absolute masterpiece they are. at first they look just like any case, then you see the build quality, the perfection of every small piece of metal.
protip - windowless models make even less noise.