Dave,
By now I am sure that you have spent some time in the new 560. We picked up our 550 on the 2nd of May and camped on the way back to New Mexico. We were very fortunate with the weather, not a drop of rain in either direction and we were looking forward to some since we have forgotten what rain feels like in the Southwest.
In the 30 or so days of ownership we have camped out in our 550 for 10 nights that's about 30% of the time, and while we would like to continue at that pace I am sure that life will get in the way sooner or later (read chores around the house). We have been blown away by the quality and care that has gone into the manufacturing process. It has been really refreshing to be able to buy an American made product that exceeded my expectations. Have fun in your travels, I know we are.