Hi Hutch42. We did get the slide-out model with sofa and dinette (La Mesa RV in San Diego). I stumbled across it, was looking for Class B but saw this one by accident. Loved it. So glad we did, makes all the difference. Just the two of us, and two dogs, I weighed everything, right at about 14,500. Includes about 12 gals fresh water tank, full tank of gas, full refrig, extra water, etc etc. I weighed the hoses, dumps stuff, clothes, you name it I weighed it, dog food, shoes, sheets, blankets, the two of us, the dogs, LOL etc, etc.
Now driving through mountains, not too bad but around 52-55 mph. We tried to keep the rpm's around 4 - 4.5 when possible when going uphill. Took our time through the mountains. It shifted a lot when climbing, but I figured that would happen, so adjusted for it. Looking back at my purchase, I was asked to sign that I was getting a 2021, didn't dawn on me why I was asked to sign this until later, but in reality, I think we got a 2020, the engine booklet says the engine is a 2019 (This is when I got upset) I called my brother who worked for GM (Not Ford) he said companies like that buy engines in bulk, so to speak, and that is why it probably is a 2019. Live and learn. Grrr on my part. But I read when it was built and it was early 2020. I thought I was getting the turbo with a 10 speed, but totally my fault for not checking closer. I have the Ford E350HD. A stupid mistake I'm sure, but when I looked up the pricing the newer engine was 10K more. I like what we have and now don't mind a bit. The driving is great, did I feel trucks? Sometimes but not bad at all. Sometimes they pushed us when passing but not all the time. I love how easy it is to drive and maneuver. Even made some u-turns. LOL
Oh, I had a 2007 Fleetwood Jamboree 31M before. No comparison. The PHoenix TRX drives so much easier and nicer. Two reasons, newer, and also a lot smaller.