The best way to compare is go to the website and download or otherwise view the spec sheets. I did that on an iPad Pro in split screen mode. If you have a printer print them. But the biggest diff for me was air conditioning, size of range and orientation of bed. The interior color is different. I actually like the Avenue better but I’ve spent the last week in 105° weather and even my massive ac in my house can’t keep up.
Also there are huge number of videos on YouTube created by alliance or rv dealers and many of our members here as well. Ours is tied up in ordering process, awaiting an influx of cash from selling two houses.