Since price to quality is being discussed here let me put my 2 cents in and say that I am extremely happy with the Ikon 7614's that sale for $350 a pair. Fully adjustable, aluminium body. Coming from a Speed Triple to a the Speedmaster I feel that I am still enjoying the performance I am used to.
Ikon 7614 info

2001 TT600 Turbo - 162.47 mph - APS-BG 650 AMA Record 2006 Speedmaster - 111.101 mph on the Salt Flats 2000 Speed Triple - 63k memorable miles.