It's good. Pretty good. The Daniel Craig Bond series is WAY better than the Pierce Brosnan series, no question. Remember Die Another Day with Halle Berry? I was laughing during most of it. Those Bond's were cheesy and predictable with terrible acting and terrible effects.
The new Bond, however, is really slick. Craig is a terrific Bond, suave and cold, but also charming and intense - very dashing. I was never into the old 007 though, so that might have some effect on my feeling. I know a lot of people don't really like these new movies because they think Sean Connery is the only Bond (and he is good no argument there), but I never watched the original movies when I was young.
If you liked Casino Royale, you will love Quantum of Solace.