Hiller Info
Never flown a Hiller myself but I know Vanguard Helicopters at Henstridge have a bit to do with them. They have just rebuilt a Hiller in Army colours. Maybe they are worth a call if you want some more info on them.
Yes they maybe slow and old but it's like a classic car. I know some slow and old pilots but they are not dead and I am glad to see the Hiller is not either.