Having owned Propeht 130s, I can say they don't have alot of..."pippity poppity motherfucking pop"...whatever that is.
They aren't super stiff (no, they don't have any metal in them as some are saying, can you imagine how heavy they'd be?) more like a mid flex, but they ride more stable than a hand flex would suggest simply because of the girth. They are a true full twin, and they land/ride switch in pow amazingly. They can also hold an edge on groomers and are pretty much great skis everywhere. I equate them to being a Ford F350 Pickup (whichever one is biggest,crew bad or whatever), whereas most park skis are more like a Honda Civic...they are a little different at first, they are longer, wider and heavier than what you're used to, but they are also alot more stable and commanding. Once you get used to them (about 5 runs or so and you'll be good) they tear it up. Never ridden the EP, but I loved my Prophets, they were awesome skis.