I use Arctic Silver 5, Arctic MX2 or Noctua NT-H1.So which thermal paste should I heard arctic cooling is a good make.
I do not recommend you use artic silver, it'll short out your board if a little bit even get's on it, use MX-2/4 it's safer and cools just the same.
That one will do.
For what it does, I do not consider that expensive. Better spend a bit on good thermal transfer than overheat the CPU and wind up buying a new one - now that can get expensive.It's too expensive, here - http://www.ebay.co.uk/itm/Arctic-Co...626?pt=LH_DefaultDomain_3&hash=item2ec1940f9a