Hi all, I believe I read somewhere (a while ago) that you can have as much charge cards as AMEX would give you, but for credit cards it is limited to 2? Can anyone confirm this?

I have the SPG personal and the Simply cash (both credit cards), and am thinking of getting the SPG business (also credit card) - which means it would be 3 credit cards....can anyone comment on their experience with something similar? Thanks!