Hi Brent, You are right my J400 will get to vne very easily at 1500 to2000 ft.
It will cruise at 120 or one or two knots better IAS on a good day, and never below 118 at above alt's. The three blade prop is brillant, it's the same as Brent's
The cruise speed is at about 2800 to 2850 rev's.At or near vne the controls get very heavy.(only tried in smooth air the plane was still accelerating but slowly), I stoped at 138 knots which is vne for a J400.There were no vibrations at all. It ran out of forward trim, ie nose down trim. Rory