Treeless saddles vs regular saddles. Pros, cons, advice and best brands

My chiropractor gets alot of business from those who use treeless and flextree saddles .
Treeless saddles tend to put pressure from the stirrups on the horses back causes tender spots. I would only use a treeless saddle if you're not using stirrups!
I find that treeless saddles are good when you want to ride for leisure and if you have a bumpy horse. However in my opinion regular saddles are better