DW heads are made by Remo. I believe they're a proprietary design for DW. I don't believe you can buy them with a Remo imprint on them. Speaking from experience, they sound pretty darn good on DW drums. Very punchy and focused, if that's what you like and want. I have an endorsement with Evans, so that's just my choice. They've been very good to me, but I wouldn't hesitate to use the DW heads again if the situation was different.
I have found that Evan's EC-2 Level 360 heads are similar to the DWs. I just put them on one of my DW sets, and am anxious to see how they sound on the gig.