As an ex-employee of the great Shorts company in the 1960s it was always said that the 1950s Seamew had the biggest speed range of anything going, with a stall speed in the 30s and some silly speed achievable in a terminal dive. I don't have pilots' notes or an ODM to verify numbers, but will check in due course.
But if cruise speed is the reference point isn't this just a function of the engine size, wouldn't Vs/Vd be more relevant?
The Seamew had a big barn door of a wing for 'loitering' until it was discovered that helicopters could do it better, but it was an attack aircraft so launching weapons in a dive was also part of its remit.
Feroxeng