Hi all - I've got a pair of tannoy mercury m1 speakers which i bought about 20 years ago, and a friend has given me a pair of tannoy 603 II speakers. I've not had a chance to listen to both in my lounge, where i listen to music most, but on paper should i expect one to be better than the other? i currently have the mercury m1 speakers in the lounge. an internet search hasn't been particularly illuminating. grateful for any general views. thank you, Chris