Management wants to switch to Fortinet. Has anyone used Fortinet and can give me some real world comparison between Palo?

Fortinet has whispering in our CTO's ear and promising them great things at half the price of Palo Alto. I've been using Palo for 15 years and even am certified, but I know nothing about Fortinet. Needless to say I'm not a huge fan of this idea, but mainly because I'm completely unfamiliar with it.

The main driver is the cost. Has anyone switched from Fortinet to Palo or vice versa? How did it work out, and do you regret anything?