Descente Bliss Shorts?
http://www.teamestrogen.com/products.asp?pID=11915
Similar price category. This was one of the first pairs of shorts I bought. This past summer, most of my shorts were dirty and I pulled these out of the drawer, not having worn them in probably a year, and was very surprised at how comfortable the chamois was.
Also Shebeest has a few pairs of less expensive shorts with their lighter "hourglass" chamois:
http://www.teamestrogen.com/products.asp?pID=25767
http://www.teamestrogen.com/products.asp?pID=25905
I have actually worn the stripe shorts for spinning before. I find them pretty comfortable on the road for up to about 30 miles or maybe a little more, but my saddle is a lot more comfortable than the spin bike saddles at the gym! I started to get sore about 40 minutes into a 1.5 hour class.