all of these look nice but the problem with any type of shelving when you're OCD is the future.
Say you put your PS2 games on two shelves. your Sci-Fi DVDs on one.... and so on.
It looks great and then you buy a bunch more and it doesn't fit.
Now you not going to have one lone PS2 game on the Wii shelf, that's just wrong right? so the only real solution is to widen the whole thing......