i7 2012 ...Thanks all for the input. At the moment i've not yet purchased the replacement higher spec mac mini, I'm planning on doing so next month. At the moment i'm running on my repaired Macbook Pro.
Whilst i'd love a quad core, I just can't afford it. I also have an Apple 27" cinema display, keyboard and mouse already and don't have space for an extra monitor, so an iMac is out of the question.