Thanks Genie, that's much more clear: to-mah-to or to-may-to. In Buenos Aires many years ago when I was a child, all English Schools and private teachers were Brits or have studied in a British institution. Anything American was seen as second-class. (We pupils, too) Then we learnt to-mah-to and po-tay-to, but did never dare to ask why.

Un abrazo - Andrés