Well, B is brighter. Maybe a bit too bright. But that's why mixing
desks and DAWs have eq. Bright can be useful, as long as the mic
responds graciously to eq when you don't want that instrument to cut
through.

It might be interesting to eq each sample until it sounded "best",
THEN compare. If anyone else wants to try, I suggest they access
them through the root web page:
http://www.moirac.adsl24.co.uk/showntell/show.html

That way it's easier to intercept and save the files before they open
in your default player! Otherwise you have to go digging around in
Temporary Internet Files, which is tedious.

You really need to do something about that key noise on the
instruments!