Thermostat. High flow or not?

[Harvy500]

Thinking my thermostat is on the blink.
Very soon I'm changing my water hoses from the blue ones that'll be looking for a new home (brand new when fitted and only done less than 1000 miles) for black silicon ones.
While I'm in there, I want to bung a new thermostat in.
After a quick look around, I'll go for the 83deg C thermo.
Question is, high flow thermostat or standard flow?
If it makes any difference, I've got an upgraded alloy radiator.
Why high flow?

[Belle427]

I believe Tvr fitted high flow versions to their cars, obviously to try and aid flow for cooling.