Basically:
Best budget at stock i3.
Best budget with easy oc 955 (@4ghz), bulldozer upgrade potential if the right mobo is used.
Best performance for your money i5-2500k, although the mobo will cost more there both the potential for an i7 upgrade/over-clock in say a years time. If you don't plan on upgrading for a couple years this would probably be the best value.
Best budget at stock i3.
Best budget with easy oc 955 (@4ghz), bulldozer upgrade potential if the right mobo is used.
Best performance for your money i5-2500k, although the mobo will cost more there both the potential for an i7 upgrade/over-clock in say a years time. If you don't plan on upgrading for a couple years this would probably be the best value.