All of them will have problems...
Eventually.
Over here in the States, Visa is running a series of TV ads which insult anyone who doesn't use Visa to buy, well, anything, from fast food to clothing. The catch phrase is "Life comes at you fast." The implication is that using cash or checks is much slower than using Visa, which is, of course (1) patently false; (2) insulting to the point that I am nearly ready to tell my bank to either give me a non-Visa ATM card, or I will change banks; and (3) going to be infinitely amusing when (not "if" - I am an I.T. professional, and I promise you it _will_ happen sooner or later) Visa's processing network suffers a major cockup.
The arrogance of these people amazes me. Well, no, thinking about it, I suppose it doesn't. People who don't know WTF they are talking about are usually pretty arrogant on the subject.