It's hard to get giddy about something as mundane as a caulk gun, but after years (literally, I'm 68 after all) of using them and making huge messes (while expanding my vocabulary greatly) I bought this one a few months back when i read about it on one of these forums. Not quite Festool priced for a caulk gun, but worth every penny. When you let up on the handle, the caulk really does stop flowing. It has some kind of spring arrangement in the pusher rod that allows it to relax once the trigger is released...the dang thing really works great. It has some other neat features, but they are less