Not sure about the best, but here're my favourites:
Dream Theater - Systematic Chaos
Robert Plant & Allison Krauss - Raising Sand

Though, the album I have been listening for the past few months is Mika Nakashima's Yes. It's so good that I have yet to get bored of it.

Mika's Life In Cartoon Motion isn't too bad either.

Haven't really got the chance to listen to Eagles and Mark Knopfler respective albums, but I suppose they're worth a listen.