What year was the H1? I actually find them no worse than a lot of other period bikes. The rider got into big trouble when he found himself on the gas too long. They were fast and from 6,000~8,500 had no equal in 1969 and 1970 turning a 12.6 second quater at 110 mph - not bad for a 500.
750? a lot more mildly tuned than the 500. More torque, less hit, less rpm. Still no slouch. Of every muscle bike you could buy in 1973, Superbike magazine said it would "snort, buck, and eat anything you laid at it's feet. Riding one through the 1/4 mile was like a succession of wheelies and growls to go with it". It was the hardest accelerating and best braking production bike in the world in 1973. It beat it's own big brother, the mighty Z1 in everything but comfort and quietness. Modified they are a major handful. With good pipes and porting, power comes on like a speeding car hitting you at an intersection - explosive. You have to love the rush, because you'll never enjoy the ride on a modified one otherwise.
Gordon