I've decided that needs to be the next purchase. I can have fancy pots, fancy fermentation vessels but if I can't keep the temperature consistant none of it will matter. I was looking online but it's hard to tell, has anyone had good luck with ones that I can pickup at sears/lowers/home depot? I want it to hold two 6 gallon buckets/carboys. I was thinking of just bringing a bucket into the store to measure them out.