Why not
The big question is, does it sound as smooth and non-fatiguing as McIntosh.
Since I've already owned the likes of Krell, Mark Levinson, BAT, ARC. etc... I have a pretty good frame of reference. McIntosh made me pause and listen to music for 3 years... longer than most gear I've owned.
Continuing on the path to audio nirvana, I would not go back, only forward. Lamm is the only gear so far that helped me go forward in the "right" direction. :yes: To understand Lamm one really has to read the many reviews out there and even better yet, give them a listen! 
Lamm is a paradox in the audio world, transparent, resolving yet one of the most harmonically rich sounding and musically engaging gear out there. The hybrid desing of using a triode in the second driver stage, driving the high speed MOS-FETs which are biased into pure Class "A" operation is a very musically rewarding, natural sounding topology. I am very, very happy with the results. There is not enough time in the day to listen as much as I want to listen.

Some of the drawbacks is high wattage consumption, even when the amps are idling. They get pretty warm and do raise the temps of the room by at least a few degrees when on. Being of high gain, the amps are more sensitive to grounding issues and may hiss or hum a bit. I've had that issue in the beginning which I have been able to minimize to almost a non-issue.
They may not be not for everyone but seems most that have experienced them are really emotionally touched by them. Many reviewers have kept their review samples for their systems.
