I would say go with the Alpha as well, I got one on my system and it works super well. Using a 53cfm fan and it's not all that loud or I'm just used it as I run it with the case side off and it doesn't bother me. Hmm, maybe it's time to have my hearing checked...
I found a pretty good use for some of my old heatsinks, it's snowing pretty good right now and I warm my tiny little house with a wood stove and threw a bunch of them on top of it and I use a fan blowing on the thing anyway and I could swear the house heated up faster.. :laugh:
I have a ton of extra heatsinks so I found a use for them after all...