Rara is likely being tougher on it than Demon. There are a lot of variables that could affect the experiences they each had, but I'd bet that Rara just messes around with brakes a lot more, and hasn't liked it in his conditions. However, if Demon says he likes it, you can bet that it's not a bad fluid, and it is doubtless better than most fluids except stuff like ATE that we've been discussing. Any major brand synthetic will give you good results. If you have stock brake hoses and street pads, and don't drive agressively, the odds of seeing the difference within a couple years are slim to none.
So in summary: no reason to drain what you're using, but I'd reccommend that everyone who doesn't bleed or flush their brakes all the time find some ATE super-blue and do it right. Anything will work in a pinch, but if you are planning ahead the ATE is probably the least hydroscopic fluid out there and it'll last for a very long time.
