Man i have to agree with slicksteel , i got my impact today and the quality is amazing. There is zero left to right movement in the slide that is attributed the that loud as noise and vibration other derlin slide machines make. I took the back off and was amazed at the quality of this machine everything is so tight and so well put together its quite remarkable to say the least. Also the main advantage to this machine compare to other slides is there are no set screws holding the motor in place. I noticed on the other 2 big name slide machines that there sound changes depending on how much u tighten the set scres. None of that with the Impact. the motor is set so securely it seems it cant be moved. Also the back plate is a circuit board its crazynesss. super high tech machine. Thanks todd