I am going to be using the 5645mg's on my 71" slick (DLE 30)....They seem very smooth, seem to center just fine and have a lot of torque at 6V. Although that being said, I am not a hard core 3D flier. The ONLY knock I have heard on the 5645's are they are a tad slower the say a 7955 etc. But for a good, budget high torque servo, you can't go wrong. I use 645MG's in my 60-90 Aeroworks Extra 300 and they work perfectly.
