I used all three for different sub-niches. Still new at it and only based on twitter but here's my review on each:
Jasmin/AWempire: Easiest to work with, nice tools, analytics, promo tools, a good assortment of specialized sites to help convert based on various niches. (Don't forget to check out their OLD promo tools.)
Chaturbate: Easiest to profit with, has a better model in my opinion for quick money. But a bit hard to work with. More barebones promo tools, less specialized landing pages (Can't filter like jasmin)
*This may just be me, but chaturbate also triggers a lot of flags on twitter for me. HUNDREDS of scheduled AW/Jasmin posts, Like 3 chaturbate and got flagged for automation.
Xlov: Best if you focus on UK traffic. While percentage wise, it's lower than AW; they pay in euros and are optimized for that higher converting/paying traffic so it evens out. Overall about the same as AW in the end imo. Just depends on if you want US or UK traffic.
*Note: Both Jasmin, and Xlov allow the use of their models galleries, videos, and footage from their FREE chats if it allows you to promote their sites and models. Chaturbate doesn't say you can't, but they don't say you can either from what I can find. Plus there's A LOT of watermarks, dmca threats, and general dislike of their content being spread on CT for whatever reason.