Yes, I get it. As I said (and have said on many threads) the 840's are great studio monitors and are also an incredible value... if you can wear them.
I 'm not exactly sure what you thought isn't 'true' in my post, but whatever... I wasn't trashing the 840's by any means. I would have kept them were they not un-wearable for me.
I think their sound is incredible, though I didn't find them 'warm'.
The M50's are not perfect and before they are broken-in, they do exhibit the characteristics you describe. However, after extended use, the bass becomes much less overwhelming and interferring. The highs soften and they behave themselves extremely well.
In 'my' definitions, I can't associate warm with neutral. Natural, yes, but not neutral and I define neutral as not being coloured in any manner... warm, cold, sharp, lean, bloated, etc.
To my ears the SRH840 is relatively neutral and the M50 is not. The M50 is definately V-curved, which is why I designate it as 'fun'. They are enjoyable, not analytical or clynical (though these aren't necessarily mutually exclusive).
shane