The last 20 years it has been Butch, and more recently Andy Dyson IMHO. Sam, no disrespect has picked up a lot of stuff after it's already been played out. Sams probably been doing it longer than anyone else who's still DJing nowadays I would have thought and he still does the business for me, although one or two of the newer things leave a little to be desired But these days I still say it's Butch and Andy Dyson, streets ahead of anyone else with the newies!
Over the years I would have thought though Richard Searling must be up there and no one's mentioned Pat Brady? Also Guy and Keb went through a few records between them