I have owned Atma-Sphere M60's, and several SET amps.
I have also owned several pair of Coincident loudspeakers.
Your tastes and priorities in sound reproduction will determine your amp choice. For speed, detail and utmost transparency, the M60's will certainly deliver. Their 60wpc will be more than enough on the Victories.
An SET amp will typically give a fuller and more involving sound that is slightly more relaxed and characterized by harmonic richness, warmth, and "rightness". At least to my ears. I have a soft spot for SET. In this category, I have owned a few 300B amps and an 845 amp. I prefer the 845 tube. More balanced top to bottom than the 300B, with just about the same midrange seduction, but much more dynamic and impactful. You might wanna look into the ASL AQ1006-845. Very reasonably priced on the used market. Don't be fooled by the 22wpc. This is a very robust amp and I am sure it will make the Victories sing. I have owned it for several years, and like it very much. It has successfully driven several speakers in the 90 - 94 db. efficiency range. The bigger brother AQ1009 at 50wpc is reported to be even better.
Don't forget that the M60's gobble tons of juice. They can also really heat a room. In my NYC apt with not the best a/c, they raised room temps by almost 10 degrees in the summer. Two of the main reasons I sold 'em.
I own the Dodd 120's and they are very good. If the pedigree holds, I'm sure the Dodd 50's are nice as well. Lots of really nice amps out there in the 50wpc and under range. It's a nice place to be shopping as you can spend your money on sweetness, refinement and finesse, rather than oooomph.
Good luck in your search!