I used Boyesen Carbon pro's on stock cage and they worked well. Heard good things about carbon tech reeds, can choose tension for riding style. As far as valves go I used afew of them. Started with RAD valves, worked well on stock motor and carbs then I got V-Force2's , noticed big difference over the RAD but I think I had the first version to the RAD that didn't work with my new 35mm carbs.
Then I got pyramid valves performed same as the V-force for me but not worth the price unless you can get them cheap.
I would say my vote goes for V-force3