Don't think any of these are in the top 10, but they helped a great deal of us become hooked on Audio.
Original Large Advent, Any entry level Magnepan, the 1.2, 1.5 and 1.6 Thiel. Any of the entry level Martin Logans.
And for their part the British have helped quite a few get started with KEF, Ouad, Rogers and others.
We all have to start somewhere and my progression of Magie 1.6 to 3.6 to 20.1 and with Thiel from 1.2 to 1.5 to CS6.
But the true "start" for me was the great Henry Kloss and nearly everything Advent did on his watch....ask Tomlinson Holman and others.