Tubes?

Yes and for much less than $5995 you could have a Raven Osprey with even more tubey magic and being integrated save even more. But for the range the OP is in it would be a shame not to go for the Reflection. Check out willgolf who has owned one and compared with much of the world's finest and see what he has to say.  

Mozart is right, there is no comparison, the choice is which do you value most. If its numbers then SS. If its music then tubes. It really is that simple.

You could probably find someone to buy the Salons off you for more than enough to get a pair of Ulfberhts, or even Moabs with all Be tweeters, either of which would be at least a match for the Salons in tone and detail, and walk all over them when cranked up good and loud. Especially since they will allow you to run a high quality tube integrated that will walk all over your current Mac amps. Together you will have far better sound, able to play even higher volume, and with money left over in your pocket. Heck the money you are talking about spending on more McIntosh would get you into a new Raven Reflection that will cost less, sound better, and look way, way, way better. https://www.ravenaudio.com/product/reflection-mk2/

Being tube watts it would probably be better than your other choices even if you keep the unsuitably inefficient Revels.

Just sayin.

Tube watts are greater than SS watts, and no it has nothing to do with distortion or any of the other excuses SS people in love with measurements like to make. Your problem is nothing to do with the type of amp. You simply have chosen absolutely the wrong speaker for your taste in music- loud. The absolute minimum you should consider is 90dB and if you really do like it loud then I would strongly recommend 95dB or higher. This alone will solve all your problems as going from 85dB to 95dB drops your power requirement by TEN TIMES! You can go from using all 300 watts and wishing you had more to being happy as a clam with a 30 watt tube amp.