Corsair 300R is my choice.... What do you need? Do you want good cooling? Good cable management? etc
Good cable management is essential because I'll be getting a non-modular psu. Also, cooling is a must, but can the 300r house a good heatsink for the cpu?
The 300R Is a great all round performer, I have a 500R, it's epic (but £90, so kinda irrelevant!)
So the 300R would be a great choice, not sure about spacing, but have a look at this: http://www.youtube.com/watch?v=oK1DGZMXmL8