Sorry to say this, but crytek's method of rendering foliage will look jagged however the best advice is probably to try each form of AA at its playable levels, edge AA is effectivley blurring a line (in a way that sort of is what AA is) but to me edge AA works, Joe Bloggs down the road may well hate the look of edge AA and prefer MSAA. The reason being each diferent form of AA requires different levels of performace to pull of any given setting, so some people could be using 4xMSAA on crysis but for others 16xCSAA is best, maybe Supersampling is suits your needs, explore your driver panel to as theres a wealth of options be it nV or ATi....
Sorry if that was confusing, I'm very tired LOL!!