All I know is that my LCD3s, both pre- and post-RMA are my clear choice for almost all of my CDs over PS1000s, D7000s (though I have had many good times with the Denons), T1s (also had lots of good times with these), ATH5000s, 650s, K701s, and Ultrasone Ed8s and bass-light R10s. Based on my experience I would buy them again w/o hesitation.
I think this purchase-anxiety is overblown, as you get the 30-day-trial (I think), customer service from Audeze seems just fine to me, I went through 4 pairs of Audezes with no defects ever, and they seem to work well with different amps and sources. And it's great having the detachable cables, where you can tweak the sound in a major way to suit your preferences (and lot's of companies offer Audeze Cables).
I'm just guessing, but I bet cable-swapping will change the sound more than sample differences (it sure changed the sound for me after trying 4 different cables, finally settling on Enigma cables).
And the price? Well, look at the Fostex 900s or Staxes.
I have tweaked (cables, power conditioning) to the point where I actually like my HD800s more though, but I use both of these phones as my go-to phones for great experiences.
But the 800s need a lot of work to get right, while the LCD3s are more adaptive to sources and amps.
The LCD3s, as I mentioned a while back, mate very well with Ray's B52 amp, with a nice firm sonorous controlled bass, fine resolution, and no sour notes and a relaxed and highly immersive sound.