We have been happy with Cougar. The 2008 318SAB served us well. As others will say, we found maintenance is key and we had to do some minor repairs too, mainly because we apparently shook the heck out of it on the road and there were some construction issues. This year we traded up to the 333MKS and after 1 season are very happy. Likes include Moryde IS suspension, huge shower, a great floor plan (we travel with a golden retriever), plenty of storage, plenty of windows (had another small window added in the kitchen, DW loves windows). Dislikes-sofa bed (the bed), the flaky light control panel, goofy remote control, no place for the bathroomTP holder, no interior light switch by the door. Overall quality gets higher marks in our 333.
We tow with an F-350 6.0 diesel dually. It tows very well.
We had a similar experience with Jayco-expected a lot more then we saw. It didn't help that the salesman was relentless and we came to value a good dealer relationship.