i've owned 2 epics in 3 years and they can be a great disc, if you know how to use it. No, i'm not carrying one in my bag at the moment, but there is a reason for that, and it's not because the disc sucks, it's because the courses i've been playing lately don't have any "epic" holes that i would really have an advantage on...the only time i would throw this disc is for a high risk/reward shot, bc lets be honest if you decide to throw an epic it's gonna be high risk lol...for example one of my old home courses had a hole that was impossible to reach in 2 UNLESS you went over the top, nearly straight up, of several VERY BIG trees, then went about 300' out. i would go over the top, and birdie several times when everyone else would have to fight through the woods for their 3-4+..and even if my drive didn't work out right the worst possible scenario was that i would be throwing from where everyone else was at....sorry for the long story, but the only way i can justify the epic being a good disc is by giving this example, bc as others have said, its inconsistent and very unpredictable(no matter how well you know how to use it), but there are advantages to this disc, you just have to know the time and place to use it
now i throw a thumber in the 360's, with pin point accuracy, and can/have thrown an epic in the high 400's to low 500' range
Rule # 1: ONLY, ONLY, ONLY throw it into a headwind if you want optimal results, the sronger the wind the better it flies..at least to an extent i have had it do double barrell rolls and still fly, but you really have to chunk it and the wind has to be pretty hard.... tailwind = SUCK
Rule # 2: the higher you throw it, the better!! i've found a 60-70 degree angle works best for max d
Rule # 3: know how to tune it, and tune it before EVERY throw...after lots of tinkering you will notice how much is the right amount of "tuning" you just have to figure this one out for yourself. just remember if its hyzering too much after the barrell roll, bend the wings down(makes it more understable), if it's turning over too much bend them up(overstable) when "tuning" i grab the thick end in one hand and the narrow end in the other, ust to know that i consistently bend it the same way.
Rule # 4:Release angles. personally i've found if i hold the disc on a 45 degree angle i get optimal results...if you throw overhand shots allready then you know by now how the angle of your release affects the shot. but in case if you don't, if you throw with the disc straight up and down it will flip later and be more overstable, the more of an angle you put on it the faster it will flip and the more understable it will be.
man just play in a field with it for a while and you'll get the feel of it..it's a very unique disc, and can do some pretty cool things once you figure it out...one thing that helped me was me and a bud went to a field and threw to each other, maximum amt of throws in min time. good luck
*note i throw soley thumbers for overhand shots, so some of this advice might be a little off for tomahawks