@fjn04
I assume with the Nagaoka MP (500) I would give up the London's insight in to the emotion of music.Well, as you've noted, it's to what degree. The quasi-cantileverless design gives very fast risetimes such that there is an immediacy to everything with percussion benefiting very noticeably. Once you have used a Decca, it is not easy to switch back. That said, if you like your reproduction unoffensive and laid back, a Mullard man so to speak, then the Decca sound may be too edgy.