My daughter was going to give me a Big Mouth Bubbler for Christmas, but her local HB store discouraged her. I have now seen some talk about fragile glass ones, but are there any issues with the plastic big mouth bubblers?
I have a plastic big mouth and have zero issues with it. No bubbles in the plastic and the lid seals fine. Granted that's only a sample size of one but I am planning on buying another at some point.
Had a glass one that felt flimsy and I worried about it breaking. I now have two 6.5 gallon plastic ones that work well... No bubbles, no warpage, they seal fine and are easy to clean.
I bought a carry strap for each and think that they are a worthwhile investment.
The general consensus seems to be that the plastic ones are good, but that the glass ones are malicious bastards that are, as we speak, plotting your demise.