Can not answer your question but if you can get your hands on the T+A, go for it. That’s really the best way to answer your question. IMO-the thing with auditioning is that it’s hard to know if it will actually work with your setup. It’s not your own system, You’re listening to someone else’s setup. There are so many variables - room, sources, cables, speakers and more. Chance of matching your set up to theirs is slim. Hearing them and taking home for trial would work. Hauling your speakers, sources and cables to dealer is impractical. There are plenty of people here who know what to look for when auditioning and knowledge to mentally calibrate to one’s own system and have had successful outcomes.
As for shipping hassle, you’re going to spend many hours listening to your system for years to come. What’s a hour of hassle time? For shipping expense, it’s the cost of reducing risk that you may get into an amp that you are ultimately not happy with.
About the specs on the M200 and your needs, I can add no value.
On T+A, I’m hooked on the company, their engineering approach, the quality of their builds and I do own their products. Other than their software on their streamers I happy. One experience that really put me in their camp was visiting their room at EXPONA 2022. Like most showrooms, it was loud and hard to judge anything, but I spoke with the owner, US sales rep and maybe the son. I just came away impressed by it all. That does not mean T+A will work for you but it certainly did for me.