I live about a mile from Jonas Bros. Except for my first mount, a shoulder mount of a mule deer, I have had all of my trohpies done at Jonas. They include a bearskin rug, a shoulder mount of a 6x7 elk, two shoulder mounts of cape buffalo, and a pair of elephant ivory (60/side).
Jonas is a little more expensive than some of the small shops, but they also have resources that the small shops don't.
As far as African game, I stop by there sometimes just to look at the various trophies on display. The place is always full of lions (I saw about 14 full-body mounts lined up one day), leopards, crocodiles, baboons, kudu, gemsbok, sable, and just about everyother plains game you can think of.
They even built a large freezer, so that they could store complete elephant skins for Cabelas (apparently they do several 100 thousand dollars worth of work for Cabelas every year.
They do some pretty artistic mounts as well. I've seen a full-body mount of a leopard, leaping up and snagging a full-body mount of an impala.
I also saw some world class elephant ivory (~138 lbs for one and ~146 lbs for the other). I was told that they belonged to a Chicago businessman, who had them for years and had decided they needed to be remounted on some marble stands. So he had them flown to Colorado on a Lear jet, just so Jonas could do the work.
(I was told that they were valued at a quarter of a million bucks).
Seems to me they have plenty of credentials.
BTW: Besides the Taxidermy Studio, they have three other taxidermy-related industries (Rockmont Industries, Knoblochs Tanning Products, and Jonas Supply on site, that manufacturers taxidermy forms (including custom forms) and supplies that are used by many smaller taxidermists.
As far as taxidermy awards, I guess they are big enough and so well recognized, that they don't have the time or need to enter local competitions. That's just a guess.
If you want to know call Bill Zlupko, the Manager of the Studio at 303 466-1112 or fax him at 303 466-1111. They also have a web site
www.jonastaxidermy.com were you can contact them.
Just my thoughts/experiences.