Why is the current owner wanting to trade? Do they need extra cargo carrying capacity or towing?
Jayco is typically decent units. Some of the technology they use for construction is behind the times though. The Jayco has luan walls and ceiling material. If there is ever a leak, it separates more readily than the composite (azdel) used in your rig. Frankly, luan can separate even just due to age and natural moisture that can occur in the weather process if camping in extended shoulder seasons (condensation). The roof of the Jayco is rubber while yours is fiberglass. Fiberglass is also superior. Based on its age, and especially if it has spent the whole time outdoors, the roof may well need the decor self leveling caulk attended to. Most folks sadly ignore this and leaks soon are a problem.
My current rig has these older technology limitations but I knew that at the time and paid accordingly. I had roof items in need of immediate attention.
The tires on the Jayco are likely due to be replaced due to age. The chassis is likely a 2006 with tires from 2005. Many folks generally replace tires after 6 years or so. There is a lot of debate on this site about this one...
Thus, your current rig likely has less expense to maintain in the immediate term.
Here is the Jayco brochure. http://www.rvusa.com/specbase/pictur...ilename_22.pdf
All this said, the extra room is a nice feature. Check the cargo carrying and towing capacities of both of the rigs and ask yourself about how you intend to use it. My rig has no slides and is shorter than most. It gives me cargo carrying capacity that I have virtually no worry of ever exceeding. Many rigs leave the factory with less than 1,000 pounds of CCC. Adding those riding with you and that isn't much.
In the long term, and if well maintained, the Jayco with slides likely will be easier to sell.