I have not heard the AA 7Ts. But I own 7Bs. Salks (which I have thoroughly auditioned), Philharmonic Audio (similar to Salks and which I currently, and always will own), and Aerial Acoustics are my three all-time favorite loudspeakers. For reference, I have owned or auditioned hundreds of speakers.
So I'm at a bit of a loss how to compare the 7Ts (vs. the 7Bs). Without getting into a lengthy review, which you can find in many places, I can offer a short impression of each that I own. And I'll say that you'll have to pull all the above speakers from my cold, dead hands. I find the Salks and Phils to be ultra-clear and beautifully musical ... especially when they sport the RAAL tweeters. Their crossovers have been designed by my favorite guy in the speaker design business...Dennis Murphy. The AAs are a tad darker...likely due to the tweeter, and require more power to reach their best. They're not as sweet as the others, but the 7Bs are pretty darn smooth, and like the Salks/Phils, are super linear across the frequency range.
Depending upon your particular usage, you will be happy with either choice...though I'd tip the scale a bit toward the Salks (or Phils).