Thanks a lot for your comment David - very useful to know that my mix sounds ok on your RealPhones, dSONIQ presumably?
I often mix on my Sennheiser HD650 headphones these days, I think they're great for the price - after much use over several years I feel I can pretty well trust what I hear through them. If I have any doubts, then I re-check the mix on Genelec speakers with a sub - that of course brings in the effects of the room I'm in, so it's 'swings & roundabouts'!

Thanks for taking a listen!

Cheers, Carl