We purchased our 2013/2014 Ext Lounge new in January 2014. Mileage now 45K. As indicated above, the leaf springed rear axle created a rough ride for those sitting on the rear bench. In 2015 Installed 4-Bag Glide Rite Air Suspension, https://www.sprinterstore.com/produc...-system-4-bag/
which made an amazing difference in ride and handling. MB recall on passenger airbags & Airstream recall on propane tank valve. Replaced all OE tires in 2020 due to age. Slide out step just stopped operating this past month, so, it is on the "to do" list. We are more than happy with this vehicle. It has taken us safely up to Canada and down to Mexico. Good Luck!