Now that I've figured out what an E3 is, does your LBS have a loaner saddle program where you can try out all manner of different saddles until you find one that doesn't trash your butt? There are some saddles that look like the E3 and in fact, some Big Bike Business Company must have made the saddles private label for Performance/Nashbar, so maybe try looking at the offerings from Selle Royale, Selle Italia, etc and maybe it'll put you back on the right track? I know it's really a drag when the saddle that fits you like a glove gets discontinued, so hang in there.