We looked at one and feel they are one of the most durable units on the road. Even if dealer turns into a jerk after buying, manufacture still stands behind them. We ended up buying a used 25W, just because of the room and less $$$ than new, nothing else. The 22g is a stronger unit IMO but size just didn't work for us.
(just trying to help) When your ordering I would ask for, no make request a "build up" sheet and "elec and plumbing drawing" before you order. Also when doing the PDI at the dealers lot, include pulling the hubs and look for way to much grease that the delivery guy blasted full when delivering to dealer, and now grease all over the brakes shoes.
Before we bought...for the last 2 years wife has asking every Arctic Fox owner we ran across how they liked their unit. Found out very few have any problems. That doesn't mean they don't have problems just the odds are with you.
Hope this helps.