I've heard much the same thing from a few people that I worked with over the years as they came to prefer Concrete 5 and various other CMS applications. As they say, whatever floats your boat
I don't have the time or energy any more to learn something radically different. Yes, Revo core is a lot different than Evo core, but it's really still doing essentially the same thing, so it's more a matter of how it's doing it rather than having to start all over with learning what it's doing.
Besides the actual technology, I've been comfortable with the community for too many years to be dissuaded from going along with it for very long. Get right down to it, the technology doesn't matter all that much. They all get the job done and need to be learned (by both developers and editor users), from phpNuke to WordPress, so to me my "comfort" is the deciding factor.