Can't speak to the Halo amps, but if you're after a fuller, more robust sound with denser/more powerful images (relatively speaking that is) I'd lean toward the McCormack. If you prefer a quicker, lighter, clearer, and more airy 3-dimensional presentation the Brystons might be better.
I think Wes Philips found the Tiny Dancers really appreciated more power in his Stereophile review, so unless you've got a small room or listen at low levels they might give you more with the bigger amps if you can afford them. I would doubt they sound bad with the little guys though.
Given that you're planning on driving the amp directly with the DAC1 I'd probably gravitate toward McCormack (the Bryston might sound a tad lean in that setup), and you'd save a good bit of dough and get a great amp if you can find a used DNA 0.5 Rev. A or DNA 1 Rev. A. If you don't like what you hear you can sell the McCormack at virtually no loss given how they hold their value.
In any event, hope this helped and best of luck.
I think Wes Philips found the Tiny Dancers really appreciated more power in his Stereophile review, so unless you've got a small room or listen at low levels they might give you more with the bigger amps if you can afford them. I would doubt they sound bad with the little guys though.
Given that you're planning on driving the amp directly with the DAC1 I'd probably gravitate toward McCormack (the Bryston might sound a tad lean in that setup), and you'd save a good bit of dough and get a great amp if you can find a used DNA 0.5 Rev. A or DNA 1 Rev. A. If you don't like what you hear you can sell the McCormack at virtually no loss given how they hold their value.
In any event, hope this helped and best of luck.