I started riding my 7300 in June. 3 to 4 weekday rides of 5 to 10 miles pushing it and at least one 25 mile ride on the weekend, also pushing it a bit.
I started out averaging 11mph. Now I am in the high 12s. When riding with a roadie pushing me I have been has high as 13.7 on a few rides. I think I will get to averaging mid 13s on a regular basis but not much higher than that.