After countless hours researching and deciding which stringing machine to get, I decided on the MP680. I recieved my Mutual Power Hercules 680 today. Came in 4 days, one of which doesn't count because I was not around to sign for it. I'm going to do a comprehensive review after just 2 stringings. Packaging and Assembly The packaging was pretty sturdy. Plenty of styrofoam to absorb impact. Everything was wrapped up in heavy plastic. The weight of the package was 49 lbs. I did not recieve any sets of string with my machine, which was kind of dissapointing because some were saying they got as many as 14 sets of string with theirs. The tools were a box wrench, 3 hex wrenches, an awl, and needlenose pliers. Assembly was simple. The included instructions were easy to understand and included helpful diagrams. All that was needed to do was put the drum weight on the tension rod, insert the tension rod in the tensioner, and tighten the tension rod retaining screw with the included 3mm hex key. The side mounts had to be put on, but all that was just removing the thumb screw, placing the mounts in the farthest out holes, and putting it back on again. Other than those 2 things, the machine was pretty much assembled. Base and Turntable The base itself is really sturdy. It barely flexes under tension. The clamp base track is pre - lubricated, and the clamp bases are pretty smooth after the initial break in. The turntable is smooth as well. Can make it almost a full 360 with a gentle push. The turntable brake is functional, although my screw was bent on arrival. It's not that big of deal, just an annoyance because its not as fast as it would be without the bend. Overall, I was impressed with how smooth and sturdy the base and turntable are. Mounting System The mounting system on the MP680 is pretty simple. The posts were easy to line up and lock into place, and the side mounts and micro-mounts were easy to get adjusted as well. All the screws and knobs were easy to grab and had plenty of grip for your fingers. All it took was one try to get the racquet securely mounted. Shook the handle, and nothing moved. Good, well designed mounting system. Clamps The clamps are nice and smooth as well. I was thinking that since the clamp bases were cone lock, they would be somewhat hard to clamp into place to get sufficient hold. It doesn't take much muscle at all, but then again I've never used spring - assisted clamps so I don't know the difference. I'm just saying that the clamp bases didn't take that much to get them locked. The clamps themselves are quite smooth. No harshness, stickyness, or clicking of any kind. The thumb adjustment is easily accessible and took no muscling or torquing to get it adjusted. They were a bit bulky, but they don't flex or move under tension at all. Tensioner The linear gripper is really nice. After the first 2 or 3 pulls, It could be done without thought. The ball bearings provide a smooth, positive gripping. The ratchet mechanism is a bit stiff at first, but by the time you get to the crosses, it has broken itself in and is pretty easy to rotate. There is a parallel mark on the tensioner. The groove for the string to go in could be wider or deeper, because sometimes, I would have to put it back in to the groove. Other than that minor inconvienence, it is pretty simple to get accurate and consistent tension with this tensioner. Overall this was an excellent buy. Obviously it has to prove it is durable enough, but I have confidence that with how solid the construction is on everything, not much can go wrong. From arrival at my door to final knot it took around 1.5 hours, which goes to show you how easy it is to use. Everything is second nature; there's no searching for a knob or wondering how to operate something. If anyone wants to see more pictures of anything, just ask. Thanks for reading my review.