I'd steer clear of a Ripcord. The TR is pricey, but decent.

I'd go with a QAD Hunter if you are on a tight budget... they run around $50. Even the Whammy at $75 is about the same as the ripcord, but a much MUCH better product.

Nothing wrong with the WB.. been lots of deer shot with them.. Not a precision rest, but it will do the job, and it doesn't have any springs to go bad.....