Mandryka and Todd, it would be a mistake to assume that musicians have, by default, access to their ideal instruments, halls etc. for recordings. Almost no recordings nowadays are made under ideal conditions (if such a thing existed) unless the artist has real choice and access to corporate funding streams or private wealth (which, as you can imagine, I do not). Even then, we are still talking about the real world, and on the day of a recording any number of things may be short of just right. Of course, artists with 'corporate' level support might labour under different constraints (eg. big labels might limit repertoire choices, might have a 'house sound' or there might be weird power plays going on between grand old-school producers and engineers and aspiring musicians - something that often affects artistic decisions). But, that granted, it may simply be that certain artists' personalities and work do indeed fit naturally with how the more visible 'mainstream' things are generally funded and marketed now, and they may well have access to SOTA conditions.
Using decent-ish modern Steinways is a more-or-less neutral choice - it is not that I particularly like them, it is just that they respond reasonably accurately to the manipulations that I am interested in: like I said, details of relative differences in voicing, pedaling, different kinds of vertical dislocation between hands or notes in chords or contrapuntal textures, varieties of articulation, emphases, which notes are stretched or compressed, where stress falls in a phrase, tempo and dynamic fluctuations etc. etc. - and of course in the ideas that can be expressed using those tools.
(As I pointed out, some people find my obsessions with these things too 'interventionist', whereas others don't even notice them at all (perhaps because all they can hear is the 'de-prioritising' of blanket warmth and 'evenness' of the kind that a standard-issue, authoritarian, Rosina Lhevine-style technique would produce) and thus find my playing lacking in 'depth' (perhaps equating fleetness or speed with superficiality, to boot) - or boring, or outright incompetent. Others, still, find the detailing colourful and interesting, or (as you do, Mandryka) 'tense and turbulent'. That sort of spread is in the nature of aesthetic experience, as anyone who has eavesdropped on audience comments at any concert will know (unless an overwhelming consensus has previously been forged around the work of an artist - in which case many in the audience will predictably seek to perceive what they believe they are there to perceive)).
Of course there are always the vagaries of ears of the listener to take into account too regarding what they may or may not perceive... What and how a 28-year old hears (musically, psychologically - and medically, so to speak) will be worlds removed from what and how a 78-year old hears.
An apology for the looooong replies and to have intruded on your discussion, some might say inappropriately so - although it has been fun. Musicians should not interfere with their critics, but I guess on occasion a real conversation about the subject matter is more edifying than ad hominem invective. I really WILL now get out of your way (I already feel like one of those conductors with their endless farewell tours...) and let Henk's 'soccer fans' get on with it – although, to be fair to soccer fans, many of them have a real technical understanding of the game in addition to their emotional involvement, and sports journalism for the most part, IMHO, puts classical music journalism to shame....
DBP