Thanks for the links, I appreciate them. I've my 2500K up to 4.2GHz with the Z75 Pro3 (haven't bothered to push it any further) so I was interested to see what sort of problems people were having, what socket they were using (whether it be the same Z75 I have, the Z68 or the Z77) and what CPUs too. It was something I wasn't aware of myself beforehand but truth be told I'd have probably taken the risk anyway as the board was such a good price here in the UK.
Yeah stick to your budget if you can, I know I'm probably not helping much but it is important despite other options to retain some sense of budget, otherwise you end up like me with my 'budget' rig turning into one that is twice the price