Don't get me wrong, I like the bow front a lot, but everyone was just pumping them up too much. They have their advantages and disadvantages. Mine is a 46 gallon glass bowfront. About 13.5" wide at the sides to about 17" in the middle.
David, the reason I don't have an algae eater is due to having a brakish tank with GSP in it. My puffers are pretty wimpy though, which I like. My sailfin mollies are even more aggressive than they are and my GSP won't even eat the feeder fish. That said, I may try out something that can survive in brackish and eat algae as I do not beleive my GSP will even care about them as they completly ignore everything else.
All in all, the bowfronts are very cool and catch the eye of new fishkeepers for sure, but for the price difference, you could probably get an eheim canister filter with a square tank.
You won't go wrong either way. They are both glass and hold water.