Soulkeeper, I would go with the 92mm Tornando. Check this out , it worked great for me.
1.)buy the tornando(92x92x38mm)
2.)buy a cheap cheap 92x92x25mm fan
3.)wire cutters and cut out the supports on the cheap fan to gut the motor and fins out of it so it is just a bracket
4.)take four case fan screws and screw cheap fan to the exhaust side of the tornando . use a small strip of electrical tape to go around where both fans meet to make a air tight connection.
5.)Now when you mount the fan onto the heatsink it will sit a tad higher but just use the bottom holes on the heatsink with the shortest attachment bars they gave you so that it gets attached at the bottom most set up holes of the fan as well. (slight adjustments might need to be made to the bars)
Now what this setup gives you is more direct airflow on the heatsink and center of it espiecally, when the 92mm fan is right on top of the heatsink it is too close the the motor of the fan creates a deadspot, move the fan away by 25mm and there you go, the whole heatsink is getting air going through it along with all the heatpipes are getting equal airflow on them. Thus the best cooling for this heatsink and many others.
This is the easiest mod you can do to help get the last drop of cooling out of your powerful fan and heatsink combo.