Well, as long as Mike made an additional note to his comment, I will do the same! :-)
I should state that my friend replaced the single stock Sovtek 6922 tube in each Lamm amp with a NOS 6922 Amperex U.S. pinched waist PQ white label. These tubes took the Lamms up a notch from a high level contender to the champs that they are now. (So if you get the Lamms, be ready to upgrade the stock tubes.)
I should also state that his system is pretty incredible, and uses very high level of components, to a similar, (but different), caliber as Mike Lavigne's system, (which is pretty damn impressive Mike! Man, I love that room!)
And, since Mike brought it up, the DarTZeel NHB 108 that we compared the Lamm to was indeed the older version, so it probably does not compare to the current version. Therefore, take what I said with a grain of salt. (Although I will state that IMHO the DarTZeel NHB 108, (a 100 wpc stereo amp), does not have the power reserves to handle the bass response of a power hungry speaker like the Rockport Antares.) And I believe that Mike's speakers, (the Evolution Acoustics MM3, right?) are actually partially active speakers, (powered by an internal 1000W amp for the bass response), so his use of the DarTZeel amp is limited to the mid-range and the treble. I will also state that the DarTZeel's mid-range was the equal of the Lamm M2.2s, (which was surprising for a true solid state amp), but I preferred the treble of the M2.2. (Again though, that was comparing the older version.)