I came across this (not sure if it was posted before) but thought it was a nice option. Definitely at the upper end of the price scale but you get what you pay for:
http://www.hogsaddle.com/
Features
•CNC machined from a solid block of aluminum
•Black oxide stainless steel bolt and guide rods
•Hard anodized finish (a resilient surface which serves as an excellent base coat for custom camouflage paint)
•1/4-20 stainless steel mounting threads and 3/8-16 back up threads
•Heavy-duty torque knob
•Stainless steel noise dampening tension spring
•1/4 inch thick, recessed urethane pads specifically engineered to absorb rifle recoil and reduce muzzle jump
•Superior resistance to corrosion
•Weight: 16 oz
http://www.hogsaddle.com/
Features
•CNC machined from a solid block of aluminum
•Black oxide stainless steel bolt and guide rods
•Hard anodized finish (a resilient surface which serves as an excellent base coat for custom camouflage paint)
•1/4-20 stainless steel mounting threads and 3/8-16 back up threads
•Heavy-duty torque knob
•Stainless steel noise dampening tension spring
•1/4 inch thick, recessed urethane pads specifically engineered to absorb rifle recoil and reduce muzzle jump
•Superior resistance to corrosion
•Weight: 16 oz