Soprano - Mid-sized tower, nice plastic front curved door.
Tsunami - Same as the soprano, just fully aluminium, aluminuim door etc
Kandalf - Full size tower, has a huge 25cm fan on the side, set up for watercooling. I might get it actually!
the tsunami has this low-grit sand-paper feeling (atleast to me) on the front panel. it also has 2 blue led lights which look a lot better in person than on the net. the drive bay door seems very sturdy and gives you a nice little click when you close it. i personnally would get the tsunami since it seems more sturdy than the soprano and is a lot cheaper than the kandalf. hope this helps