I've owned the same Entegra Ethos for about three months. It spent many weeks in the shop because of a defective refrigerator. A replacement refrigerator does not work on DC power so will be going in the shop again.
I love the way it drives although it feels strange to sit so high up. When we hit about 45 mph and wish to go quicker, it seems to take a while to get up to 70, but if we accelerate straight to 70mph, it is responsive.
I found documentation lacking. I saw something about the Showermiser in the two-page brochure, but forgot about it when I read the manual. You'll find that there is a 3-way shower knob. One runs the water, one stops the water, and the third cycles the hot water without any water coming out so that when you turn the knob back on, the water is instantly hot. Huge water saver feature in that you don't get reblasted with cold water.
Solar panel settings in the Firefly display console are not documented. Entegra told me to contact Firefly. GoPower told me to contact Firefly. Firefly does not respond. If you do purchase the unit, copy/record what settings came pre-programmed on the five screens. Then, if you post here, I'll virtual high-five you. I desperately would like to know the settings.
First thing we did was remove the Thule bike rack and discovered that the brackets had worn the paint away down to bare metal. Rubber washers would have been nice.
The generator powers the A/C nicely.
I don't regret the purchase but wish Entegra had documented settings and features better.
Enjoy!