Thanks for all the comments guys
My idle temps at the moment (been on all day) 29 and max temps after prime and heaven were 52.
I used the apache because it's quieter than the case or corsair fans.
Been running this rig for a couple of months now and not a single problem, I've also built 2 other systems based on the 450w SG05 and 1 on the 300w SG05. Both 450w's have i5 and GTX 560Ti with 3.5" Drives bungied across the case instead of the metal bracket I made for my main rig. This I find works really well and is easier and cleaner to do than the bracket mod. The 300w as a i3 540 and GTX 460 which i'm hoping to upgrade to i5 760 and GTX 560Ti fingers crossed the PSU copes!
I've also used an antec Kuhler 620 for one of the builds (rest all have H50's) and it's a decent cooler although I find the fan a little loud.
I still believe the SG05 is the best case and also think that Mini-ITX is the future, ATX just looks so big and clumsy now!!!