So, I've been at this only a year... I never purchased glass carboys, only buckets (at first). I purchased one of these and thought it was the cat's pajamas, until I realized that yeast flocked out and hung on every "shelf" created by the large, structural ribs in the design. Nothing major but... Morebeer's Fermonster 6 or 7 gallon carboys give you the lightness of plastic, the wide mouth, but straight sides to help the yeast fall all the way down to the bottom. I agree, both of my wide mouth, clear plastic carboys are my favorites. The buckets serve a purpose, but the Big Mouth Bubbler and the Fermonster are, IMO, much better.