You can also look at the Itasca Horizon line in that same year. Identical units at the top of the Winnebago/Itasca lines for those years, just cosmetic differences for the most part. Both came in several Cat/Cummin engine models on the Freightliner chassis.
Each year added a few upgrades and tweaks to both the RV and chassis so the later models may have a bit more features than the earlier years. In case you didn't know it, you can go here https://winnebagoind.com/product-res...ct-information
to download the sales brochures and other doc for the various models.
Mine has been fairly solid, just the normal maintenance one would expect over the years. Pretty much do as you'd do with any used unit... check everything over, make sure all the systems work, look at the age of the tires (a set of 6 of the 22" boys will cost you $2500-4500 depending.)
Based on other postings, as Eagle said check the roof. The Winnie roof is fiberglass but the edge seams around the perimeter must be maintained. Look inside at the roof panels, inspect for any sign of water stain or sagging (some reports of the liner glue failing.) Make sure the central heat pump (air cond and heat) works. Check what fridge is installed and condition... most had the Norcold 1201 and there have been some issues with that model (NOT a Winnebago issue but...) Something a bit hard to check is the famous windshield frame rusting. Got bit by that myself. Unfortunately its hard to check unless you pull the trim away from across the top of the windshield. Check the leveling system.
But having said all that, the Vectras are pretty solid and come with a ton of features. Mine has held up well and we are very pleased.