RE: Extreme RT 1000 sight question
They're good sights... close to great after this year's enhancements which include a pin guard right where the fiber optics come out of the plast tube and make that sharp turn to go inside the housing, as well as full-capture pins that actually give the fibers some support inside the guard (they look like half-moon discs that take up what used to be empty space where the fiber stuck through the pin.
The only improvement I would make on them now is the sight ring needs to be larger; if it was the same size as Spot Hogg's large pin guard I'd say they would have done about as well as they could with it.
Just make sure if you buy one you get all the above features I mentioned and not a leftover at a big retail outlet.