How is the 25mm working out for you?
Well I fitted it and sat in car to find I had a surprising amount of extra left leg movement (RHD remember). It was a couple of days later when I drove the car and had forgotten I'd fitted it, but found myself unconcsiously chucking the car around low speed tight bends. I guess that says it all - the extra leverage from arms to wheel was very welcome.
Its got to be a personal thing though - I'm an average 5' 10" if that helps.