I've seen them several times. I'm a Fruciante fan, not so much of the new sound. Flea still rocks, Anthony still has it too. I'd go for sure. Mothers was great, but I'm a blood sugar sex magic guy. It was high school for me.
Best concert I ever went to was Red Hot Chili Peppers in 1991. It was their tour for the album Blood Sugar Sex Magic. Nirvana toured with them and performed as the 2nd band to play that night. The show opened with this new band that had released one song at that point in time called Pearl Jam.