Peugeot made some sweet ATBs in the 80s. THe 1984 models all had Nitto Bullmoose bars ($$), the 89 Europe Express was full 531 and came with a sprung Brooks (
http://www.bikeboompeugeot.com/Broch...0Page%2014.jpg). They also made some crummy ones. I like reading through the mid-late 80s catalogs. If you are on facebook, check out the group The Vintage Mountainbike (
https://www.facebook.com/groups/235433082462/) - some of the group members were very involved in early mountain bike production (one member designed bikes for Specialized.) Look for early stumpjumpers, Fat Chance, Yeti, Breezer, Barracuda, heck even Ross had some good MTBs. OF course, let us not forget pre-Trek Gary Fisher, Klein, and Bontrager.