I'm using a small chest freezer as my glycol chiller. About 10-15 gallons of a weak glycol solution, temp set at 25, and its good to go. With two immersion pumps in it, I can brew in two Brewhemoths at a time. With a healthy yeast pitch, and picking the right fermentation temp, I seem to be able to get the ester profile I want, my ales have improved since I started watching my fermentation temps from the inside of the fermenter, rather than watching ambient temps. Then I have the ability to crash the temp to hasten the brightening of my ale. What more can I ask for?