Hi

Most of the radiator valves in my house are naff in one way or another,
mainly either stiff so they need a spanner to turn them on/off or the
plastic caps are cracked/missing.

I thought of replacing the lot, drain down the system & replace everything
in one fell swoop.

If I do that, is there much benefit in fitting thermostatic valves like the
80954 shown here?
http://www.toolstation.com/shop/Plum...ves/d20/sd2762

Will I gain more comfort or lower bills? Is there much difference between
one type & another?

Or should I just use pairs of the 15063?

Dave