My battery finally dies on my 560SEL Which shall I get.

[Two560Two]

Battery just died this morning and now Im debating which ones to get. Im thinking of either The Sears Die Hard for European models, Delphi(Use to be called AC/Delco) or Original Mercedes battery. I would go for the Optima but It is just too darn expensive. The Die hard is about $110, the Delphi is about $75-$90 depending where I go and the Original Mercedes battery should be around $110 or so if not then a little more. What shall I get?