I finish the test by giving the Silent Loop 2 120 from be quiet! a score of 9 out of 10. There is no doubt that you get a lot for the money, and the cooler could easily cool a smaller CPU, which is not hitting any limits. Still, the Silent Loop 2 240 seems like a more obvious choice if the cabinet allows for that size.
Tweak.dk has published a review of the Silent Loop 2 120mm, rating it with a 9/10 score for its easy installation, nice design, and good price-performance. For more dedicated users, he recommends the 240mm model, though.