I like both. My reference system is based on solid state, Levinson Ref 20.0 bi-amped with Krell KMA 160 on the bottom. You can see the reference system
here. My office system consists of VAC auricle monoblocks a passive pre-amp, and Talon Hawks. I haven't posted this system yet, but probably should. I have a minor balanced wiring issue that prevents me from doing this easily at the moment.
I have not yet experimented with the VACs on the ML panels--could be fun though.
Both systems have their strengths and weaknesses. The Talon Hawks, while they can go pretty low (30 Hz flat), they are small drivers and just don't move that much air. They aren't the easiest load, but far easier than an ML panel. The VACs work extremely well with these speakers. I think that's part of the issue--system synergy. The reference system is very dynamic (modified bass section). Moves plenty of air and has a huge soundstage. The solid state controls both top and bottom extremely well with a difficult load particularly on the panels.
That being said, I think system synergy (already said), coupled with what you listen to and how you listen will often determine what equipment works best for you. If you want rock music really loud, well most planar speakers are just not going to do it--a horn would be more appropriate and with a high efficiency horn you can drive easily with a moderate tube amp. Now if small jazz ensembles are your thing at moderate volumes, then you would likely steer toward different equipment.
I'm curious how many people out there that own multiple systems have at least one tube based and one solid state like myself.