I have shot 2 of the Peerless bows -- the prototype and the one I bought. It is an amazing design that is incredibly well built. I have only found a single downside to the Peerless as compared to the Quest and that is the potential for the limb twisting as it is being strung or if the string loops are not set on the tips with equal tension during the draw. I found the latter to be the problem when my bow kept unstringing itself as I was drawing it. I was EXTREMELY upset that the bow might be damaged, because I love it and did not want to send it back to Bill Howland for repairs and be unable to use it in the meantime. The limbs looked straight when the bow was unstrung, so I played with the string and the loops until I got the tension right so that the string stayed centered on the limbs as the bow was being drawn. After that, the bow has been perfect. I have 7 Quests and never experienced that problem, so I'm sure the Quest is not as subject to that twisting issue as the Peerless. It makes sense that with the large amount of recurve, semi-static tips and narrower profile of the Peerless limbs, the twisting could be more of a factor, but those same characteristics are also what makes the bow such an incredible shooting platform. With just a little more care, the Peerless won't be a problem at all.
As Bob Steele said, the Peerless is super smooth, quiet, fast and dead in my hands. It is the Ferrari of the Brackenbury line. The Quest is a fabulous bow too, as you could imagine I would think since I own 7 of them. If I were ordering a Brack, I would pick the Peerless, especially since it will take two years or so to get a bow from Bill. But if you see a nice Quest for sale at a reasonable price, buy it. You won't regret owning a Quest, and you may never see a pre-owned Peerless for sale.
Allan