My biggest influences were primarily Acoustic Guitarists, such as Gordon Giltrap, John Renbourne, Bert Yansch and Davy Graham.
As far as Electric Players, there are 3 whose styles have really impacted. Andy Powell, Ted Turner and Laurie Wisefield, obviously players such as Clapton, Beck, Rory Gallagher all have their places in my style I suppose, but the Wildcard would be Chris Rea. His slide playing is sublime!
Best Guitarist? There isn't any just one.