I seem to remember we had a TV game show in the 80s called Wedden dat ... (Wetten dass in Germany). They had candidates who had to be able to identify similar objects by brand, but without being able to look at them, or eat 100 sausages in 2 minutes, or whatever. Once they had a guy who bet he could identify 15 basses by ear. And if memory serves me right they had Mark King do the honours! (Wasn't he married to a Dutch lady?)
Okay, back to the question at hand! I find my conclusion is the same as Karl's - eventhough our ears seem to disagree.
Among the three, I like #1 the best - the punchiest of the lot. The notes jump out more than in #2 or #3 - but its near the edge, and you need to play very precise.
The other two have less low-end punch to compensate for the nasal mid tone, but you can get a pretty nasal tone on an Alembic too.
All in all, I would guess #1 is the DW.
#2 sounds a bit deeper than #3, but #3 seems to have better focus than #2, so it could be more rigid construction-wise. The Buzzard-2 is a bolt-on, the Stealth is a monocoque, right? That would make #2 the Buzzard and #3 the Stealth.
(Seeking cover.)