I was thinking of adding another carboy to my equipment list to go with my 6g BetterBottle. I was going to try a glass carboy and can't decide between a 6g and 6.5g. Seems like the 6g BB is decent but 6.5g might be better for the crazy ferments I sometimes see. But in this case I'm not so sure bigger is better. Any thoughts either way? I glanced the FAQ list but didn't see this covered.