I use a Bill/Becky Lawrence L500L. It took some getting used to because it sends like every frequency your guitar can muster to the amp. The thing is FULL-ON, if that makes any sense. No noise, no feedback, all power. I almost regret not getting the L500XL, but only if I got Bill's Q Filter to calm it down and give me more tonal variation. My L500L doesn't crunch like my Duncan Distortion, but it makes the D.D. sound a little tiny in comparison I must say. Based on what I've read, Dime's "flipping" of his bridge pickup likely does not result in a different tone since on those type of blade humbuckers, there is no hotter side.
I've seen accounts that Dime used the L500L, and I've seen others that say the L500XL. Either way, I stayed clear of the "USA"/Swampcaster ones. They're the ones that had been in the Stew Mac catalogs that everyone said sucked ballz. Hmm, Stew Mac doesn't sell them anymore. Wonder why. I've read countless reviews, and there's like 2 guys that swear by the Swampcaster company and about 500 that swear by Bill and Becky.
The Swampcaster company also really plays up the Dime thing, to the point of rudeness and disrespect. Bill and Becky don't need to play up their products and post pics of Dime all over their site. It's true, Bill may be a bad business man, but like I've said before, I'd rather him be good at making pickups than stealing my money.