Heh, I knew about Ohlins and Penske from my motorcycling days. Top Dogs for sure! (and top $$$ too!!). I bet "the same size in Penske's" would be $1500 each!
Another possibility could be Fox:
http://www.foxracingshox.com/website/homepage.asp
Somewhat taylored to the off-road crowd, but lots of sizes to choose from and moderately priced.
Take it for WIW Volkdent, but on the Mustang boards I follow they weren't too favorable on the QA1 shocks. Quality control and leaking issues after not too many miles. Hope that's not an issue on yours - maybe they've gotten their act together since, with better QC.....
They seem to have bought out Carrera, but don't seem to actually market the Carrera brand anymore. Too bad, can't find much on Carrera these days, and they were a popular brand for a more custom shock fitment with good performance/quality and value. Koni's are nice, but on the pricey side. I like the Alden literature (and info from a few references I've read about them), seem to be more taylored towards custom fitment and valving, and reasonably priced too.
Jeff