Phono-Pre:Different EQ curves?

[hgphil]

So I am very happy with my italian Gold Note Mediterraneo turntable and attached electronics from the same company. The phono preamp PH-10 offers six different EQ curves: RIAA, Decca London and America/Columbia, each curve also in a so called "enhanced" version. The company told me in a private communication that they can still detect different EQ curves in today's pressings in their labs and that it is not possible to establish simple rules for selecting the proper curve. There are other manufacturers which support different curves as well. Others say instead that since the middle of 1950s only RIAA is used.

For me as an audiophile consumer I want to come close to what the original recording wants to tell me. So I don't like to switch around with different EQ curves, looking for what sounds best for me.

What are your opinions? All bogus? Only RIAA? Excellent approach?