We are talking about getting a 2018 Highlander XLE to use as tv instead of my 2017 Sienna XLE. With the Sienna I am looking at 2300lbs or less to tow. With the Highlander we could get the Flagstaff 228D we really like which has dry weight of about 2550 with air. What are your thoughts on this? Would a Highlander have a better tow experience? It is rated at 5000 vs Sienna 3500. Our concern with Sienna is rear end sag.