I can vouch for the CG triggers that Peter sells, they are of the highest quality and uber adjustable.
Peter supplied me with one for a Remington 700 and one for an RPA, both very nice, with good instructions. I have had in the past Jewell triggers, including the 2 stage that used to be available and can say that you won't be dissapointed with the CG.
The Jewells are beautiful single stage triggers but (no offence to Arnold Jewell) the 2 stage version just didn't have the defined feel of a good 2 stage trigger. I believe Jewell has since discontinued the 2 stage model.