That’s a subject of some contention, really. Both Shapton and Chosera have their adherents. In this case, I already have some Choseras for my EP, so I’m going to try out the Shaptons on the WEPS and see what I think.
I’m getting mine from Ken Schwartz over at CKTG, he’s the only one making them that I know of. Tom over at Jende might be too, they’re both awesome guys to work with.