I am thinking of buying my first RV and looking at those in 22 to 25 foot range. One has very large rear slide out for bed...goes out about 5 feet..it is Jayco model 213. Don't see how it is supported at such a great lenth. My concern is such a large slide and its reliability. Seems to me the larger the slide more potential problems. Also looking at model 24T which has slide out for sofa and sticks out only about 1 foot. Seems like this would be much less prone to binding etc. Also.....noticed dealers often have slides out in their models on display. If model is outside....and used as display model....with slide out for maybe months....would this be a problem--that extended for long period of time? Also have noticed some of the new RV's on dealer lots were manufactured late last year....Nov and Dec of 2010......so they are 9 months old and been out in weather all this time. I can store the RV inside out to the weather and concerned about fact than been on lot so long...maybe with lot of traffic in and out of it. If buying a new RV is one fresh from factory better than 9 month old new unit?