epiphany is an ion with all the ups.. personally i would suggest buying an ion and then upgrading/customising it as you please.. you can get so much more for it.. with the epiphany you might not like some parts to it.. so if you changed bits on it.. thats would result in you pretty much wasting money..
you can get ion upgrades around here cheapish.. personally i think the ion has a nicer feel to it.. it's lighter, and i think it can out perform the epiphany if set up riight.. i used an ion for a long time.. loved it, fantastic gun.. but see if you can find someone who will let you have alook a ttheir epiphany.. and see from there!