I am flying both at the moment YS170 and a Pletty 30-10 EVO,..........it just comes down to your flying style and your expectations. I am favoring the EP, as the performance is there. I like the YS170 as it's just a "BEAST" with "CRAZY" power when you want it and very reliable. (pretty much what everyone else has said already)
So, for me it comes down to which one do I score better with, at the moment the YS170, but I only have about 20 flights on the EP...time will tell.
Bill Holsten