TFL ... wow, those Crysis pics are impressive. SMAA seems to totally smoke MSAA based on those screenies ... very cool stuff. Presumably it also gives much less of a perf hit, yes?
I did want to ask though ... you are setting the MSAA level through the settings in the game itself, right? I reckon you know this already, but the 'forced' NVCP AA really doesn't work correctly.
Also, I'm curious whether you restarted the Crysis app after each time you switched AA levels? I think in order to be sure that you're actually getting the AA level you've set, it would be a good idea to restart the app entirely. It probably doesn't matter, but ... just to be safe that's what I'd do.
Yes to all questions.
The MSAA was set via the game's options and a restart was performed for each change. I did notice that the AA setting changes seemed to take effect immediately without the need for a restart or a prompt from the game. I decided to do the safe thing and restart anyway.
SMAA has less of a performance hit than MSAA. It not only looks much better but I actually gained ~11fps+ going from 4x MSAA to SMAA Ultra! Make sure you disable the game's Edge AA because it can really mess your AA up.
If you look at the box to the left of the screenshot, you'll notice how MSAA catches the sparse aliasing on its edges but SMAA does not. Overall, SMAA does look better than MSAA and it's what I'd use to play the game. Having said that, SMAA+MSAA looks even better if your PC can handle it.