I play on both regularly.
My home table has 760, and my league home table has 860. I live in the West in a low-humidity environment (6-15% is the avg). There is a slight but noticeable difference between the two, with 760 being faster. Difference isn't really noticeable except on shots where the most critical factor is the speed of the shot. I have missed a couple on Monday nights because I didn't have enough steam in the shot to get to the pocket, but it would have been a for-sure pot at home on the 760.
I prefer the 760, because it has helped my develop my speed touch and given me a smoother stroke. Pokes, jabs, and other speed / stroke problems are greatly amplified on a fast cloth, because that cue ball just keeps going and going. Takes a silky-smooth stroke and feather touch to play a good game. I like the 860, but I love the 760.