Thanks for the response. It is always scary to transition from one way of camping to a whole other world, but we think this may be the right time to make the move. I've read some negative comments about shoddy workmanship, and have also seen it for myself at a nearby dealership in regards to the Challenger. We have been very fortunate with our 5'ers, so we need to be very thorough with our research. We like the Four Winds as well, but feel we need a little more room that the Challenger offers. We have a friend who has a 2010 model, and is very pleased with it. We just hope that we get a "jewel" and not a diamond in the rough! Take care.