I own two original Rocky Mountain Recurves and one Sierra Blanca. Pound for pound, the Sierra Blanca is faster and quieter than the RMRs. It shoots every bit as accurately too.
Like the original RMRs, Jess makes models with limbs that taper down to a narrower riser and some that remain full width. The narrower, tapered models make for very handy and light takedown bows.
Jess backs his bows 100% and is a great guy to deal with. If you are interested in a Sierra Blanca bow, I recommend them highly. - John