Al,
Unfortunately I have not... I hear bad reviews about the others or people just say they don't even mess with them and always just buy aqua clear...
I mean the only cheap alternative is just using sponges I guess. Again, that doesn't really answer your question because this isn't an HOB...
My one aqua clear is almost 2 years old and lately seems to like to sporadically take some air in the tube and get noisy and I have to jossle it around a bit to get it to stop...