With that, you'd think I'd be able to get consistent reliable measurements. what I do get is good enough for me to do a good basic eq on my system, but i dont know that i would trust the results enough to make them public. one thing i have found, especially with units like the DR200 and DR250, is that tiny variations in mic placement (forward and back, as well as on/off axis) make a massive difference. i try and counter this by doing measurements in a variety of positions, and then trying to guess what features of the response are due to the driver/cab design, and what are environmental, and try and arrive at an eq curve that works ok over the widest range of positions. but again, this variability suggests that the response plots we all love to pour over and compare are maybe not as solid as they look, and that what you said - that people in the know tend to not fall into making comparison just with the plots - is very true.
the bummer is that there isnt a BFM Listening Library on every corner, containing multiples of every cab in the stable, available to try.

oh well.