Well, what is the perceived problem with your Ayre. Those are great amps in general and your proposed tube amps would not be a step up. Don't get tubes just to get tube. At the very high end, the differences are small. SS has gotten very good in the last decade or so, such that the differences between SS and tube generally relate to euphonics in certain tube designs.
Tube are one thing, that for some people, must be experienced personally and then gotten past. It's a legitimate route, but I think you must first ask yourself what you're looking for, then define your budget and then look at ALL options within that budget range. Do go in with a preconception of tubes vs. SS, just listen, preferably with your own speakers.