I'd think twice about Bryston until you speak to Legacy about the demands the speaker will put on the amp, particularly the impedance. I started with Brystons (3s and 4s - I can't remember specifically, but they weren't the current crop of SSTs) on my Focus 20/20s, and although I thought they were great at the time, they were easily surpassed by other amps (Coda, Mac, Krell) later on in my evolution. I feel it had mostly to due with the impedance demand from the 20/20s. The 20/20s dipped quite low, below 2 ohms if I remember correctly, which made it demanding on the amp. When I spoke to Bryston Tech directly, I remember they weren't too keen on their amps seeing these low impedances.
Having said all that, the Focus 20/20s also didn't like the Theta Dreadnaught. The Theta delivered fantastic highs and unbelievable liquidy mids, but no bottom end...something the Focus is renowned for. But I replaced my Focus with Whispers, and to my surprise, they worked wonderfully with the Theta when I tried it on a whim. At the time I had a monster Krell FPB-300c (I think...whatever the model was, it was the predecessor of the 400cx). After realizing this I sold the Krell and got Theta Enterprise monos, and I haven't looked backsince...but I don't have ICE driving my bass either.
Having said all that, the Focus 20/20s also didn't like the Theta Dreadnaught. The Theta delivered fantastic highs and unbelievable liquidy mids, but no bottom end...something the Focus is renowned for. But I replaced my Focus with Whispers, and to my surprise, they worked wonderfully with the Theta when I tried it on a whim. At the time I had a monster Krell FPB-300c (I think...whatever the model was, it was the predecessor of the 400cx). After realizing this I sold the Krell and got Theta Enterprise monos, and I haven't looked backsince...but I don't have ICE driving my bass either.