Hi Bill, welcome to the forum. I have a 2020 Sabre 37FLH, which is pretty much what you're looking to purchase. This is the fifth rig I've owned over the past 25 years, so I'm not a newbie to RV ownership. I don't live in mine full time, but have had it out on three outings last year. I've done a whole bunch of upgrades and repairs to my rig, but am overall very happy with it.
If you wouldn't mind letting me know what your specific questions or concerns are, I'll be happy to do my best to answer them for you.