Spatial M3 Triode Master Preamp/amp choices

Thanks @atmasphere , @jackd and @jjss49 for steering me strait.  I can definitely tell that my old NAD 2100 is not up to the task of adequately driving the Spatials it works great until i start increasing the volume over 90 db and just doesnt seem to do much.  I normally do not listen loud but i do not want the speakers restricted by a mismatch of equipment.  I am not wedded to tubes, in fact, i have never had tubes.  The Kinki studio is one i had thought about.  There are also favorable reviews for the Doge PACD MKIII push pull 60w kt88 amp.  There is also an Audio Research VT100MkII available in my area with new tubes in it.  I also wondered if a LTA Microzotl used as a preamp paired with a new Purifi amp might be a good combo for the Spatials?  Are there any l tried and true combos i should consider for the Spatials?

Thanks @aldoallen and @jjss49 for the owner experience advice.  The guy i got my M3s from was using an LTA Zotl 10 which he highly recommended and did sound fantastic. Unfortunately, I do not have the budget for it or @atmasphere s equipment.  I'll add the Hegels to my search as well. If I go experimental and try the Microzotl w/ Purifi amp combo, does anyone have recommendations on which company is doing good implementations? I was looking at March, Nord, and Appolon.

Thanks @atmasphere your article will be my Christmas weekend relaxation reading.Thanks @kettle7830 for the additional choices to consider. Thanks @doneaton for your experience powering the Spatials.  

Thanks @supabayes.  That is very helpful. Good to know that the F7, XA25, and the LM219IA may not pair as well as i hoped and that the Kinki, though good is cold.