Depends on time, at the time of Intel Core2Duo I would probably buy that one, it's so well made that my friend can still use it today and run many newer games without big problems (yeah Crisis might be problem but it's a water drop in whole sea)
However today I would buy AMD Phenom or something similar from AMD brand because of few things:
- They can be easier overclocked (not that I need it now)
- They have a bit lower start power than INTEL counterpart but overall structure works way faster
- They nicely work together with their GPUs (Radeons I mean)
- Great compatibility, I can put same CPU into few diffrent CPU-Slots without problems, they will still work fine
- Better price
- Less temperature (at winter I had 18-20 C degrees)
The last one is somewhat negative at the same time, I can't warm my hands when they will be cold xD
