I used to shoot the G5 XR its a good sight. I just switched this season to the Axcel Armourtech-HD made by TruBall. It's solid as a rock, you can put a scope on it if you want to target shoot, it's mounted for a light, super micro adjustable and solid as a rock.

I just wrote a review on the sight on my blog, check it out:

http://www.nybowhunter.com/2009/03/gear-guide-axcel-armortech-hd.html