I use a Wichita front rest with Protektor #1 owl ear leather bag. The rear rest is a Protektor bunny ear leather bag. The bags are filled with play sand I bought at Home depot. This makes for a very stable setup.

I tried the Hoppes (aluminum) front rest, but it was just too light. It would jump around on the shooting bench while shooting. The Wichita (cast iron) is not in the same league as a Sinclair rest, but it is just as heavy (meaning very stable) and it's about half the price.

You can get Wichita rests at www.lockstock.com and probably the Protektor bags too. If not, you can get the bags at www.sinclairintl.com for sure.

I don't like the one piece rests.