Hi guys, I want to get a new HSF, right now I have the Thermalright SK7 in mind but not too sure which fan to get. I don't want anything loud but still provide decent performance. Right now I am using a Delta 60mm 7000rpm fan which the noise level is 46.7±2 dba (damn loud) with the case open. The new fan I am thinking of getting is Sunon 80mm 50.6 cfm fan with a noise level of 40.5 dba. Is 6.2±2 dba decrease in noise a lot? I hate to buy the new hsf and find myself with the same noise problem again Or should I just get a Sunon 80mm 39cfm fan which is quite but less cfm?