I like the Shine On You Crazy Diamond intro solo more. But yeah, any Gilmour is good. And Petrucci is one of my favorite shredders out there. Up there with Paul Gilbert.
Guthrie Govan is another shredder. He's normally balls to the walls blazing speed face melting, but my favorite work of his has been with Steven Wilson. The solo in Drive Home is like a ripping Gilmour solo. So damn good. Solo starts at 5:05.
Almost any Trey Anastasio solo is also amazing.