Is there a Solid State amp that can satisfy a SET guy?

If you had been using SET, then it is not easy to be happy with SS amp.

You may try out Line Magnetic 805 amp if you can find dealer near you.

It sounds decent with stock tubes, but after tube rolling it is quite good.

I'm going to suggest you consider another alternative, that being OTL amps.  My speakers (Coincident Super Victory II) are 92.5 dB with a benign impedance curve.  I tried driving them in a medium sized room with Coincident Frankenstein 300B amps.  For all the beauty of those amps, they just couldn't get it done.  THD in the neighborhood of 10% with reasonable listening volumes.  Just not providing the beauty of which those amps are capable.  I made the move to OTL (Atma-sphere M-60), and I haven't looked back.  With proper tube selection, and when the M-60's are driven by a DHT preamp, the result  will not disappoint those who are SET lovers.   I still own my Franks, and occasionally rotate them into my system.  They don't stay long.  If I had speakers in the 94-96+ dB range, it might be a different conversation, but I'm not sure.  The M-60-'s are just so pure and so sweet!  

Now, if I had to commit to SS, I'd probably be looking at First Watt, Pass, or Clayton.  But don't rule out OTL with a DHT preamp.  Special, in my humble opinion. 

I know a lot of people speak highly of the dartzeel - but i've never liked them - too much of a golden sheen. I heard them back to back against Lavardin at the UKs' original importer and wasn't blown away.
I've not heard constellation in my own system - but every set up i have heard with a constellation makes me consider saving my pennies - power, grip, effortless, not in the slightest bit cold - just right. Parasound share that DNA - probably coz John Curl worked on them as well. 
I may be courting controversy, but I find Audio Research boring, same with Musical Fidelity - NAim is definitive solid state...

Luxman M-900u amplifier. A lot of audiophiles ( on whatsbestforums ) with big tube rigs had them replaced with this amp.