I have 6 grease guns, 2 of them are air powered and none are cheap but they all suck, the hand operated ones are better than the air powered ones but clumsy in tight spaces. My biggest problem with them is they don't seal worth a crap on the grease zerks so it immediately becomes a 2 man operation where one has to push the nozzle on the zerk to get grease in the joint and not only on the outside, the air powered ones I have are great for when you're in a grease gun war, they shoot far and straight but when they have to get grease in with some force fuggetaboutem