I have the large and small sizes and love them both. My only complaint is that if glue on the surface starts to harden up, you can get some difficult-to-reach glue stuck on the walls of the dispensing tube; a cracked (bendable) bamboo skewer used backwards can reach it, but a pain. It actually doesn't harm it at all, though.
I recently had some glue forgotten and dried at the bottom. A quick squeeze of the bottom and it popped right off. I like that the squeeze is from the bottom so even when it has minimal glue in it, you still can dispense.
Well worth it.