I'll post this here given that most FT technophiles will monitor this thread.

I'd like some advice as to the best reference headsets on the market. As a part of a personal project I am in need of an absolutely top-level set of 'phones. I am currently working with a set of Sennheiser HD 545 reference headphone's. These are seven years old. The music is mainly choral in nature but can vary to large orchestra.

This is for a music restoration project for tapes that span five decades.