In the end, it is your ears that must be pleased, so I recommend seeking out a few different brands to mate up with the Brystons and give them a listen to decide what you like best with the music you enjoy.
Nevertheless, here are a few observations and suggestions:
The Bryston SP1.7 will be wonderful regardless of which speakers you choose. The Bryston 9B SST is a great sounding amp and I love Magnepan speakers (that's the brand that keeps me listening at home night after night), but having tried a 9B in my own system for an extended "test drive", I found that if you want dramatic dynamic range (i.e., appreciable difference in volume between loud and soft passages) and maximum musical detail, you either need a more powerful Bryston amp (4b on up) or more efficient speakers than the Maggies.
If the PMC line is too difficult to get a hold of where you are for an audition and/or purchase, the Bryston 9B SST will do wonders for some more readily available (albeit not nearly as refined) speakers such as top-end Definitive Technology speakers (if that isn't too much of an oxymoron) :>) Actually Def Techs are not as bad as some skeptics say though certainly not as good as their ads would have us believe, either.
The 9B would also do well with Paradigms or (I hate to mention, since I don't really like them) Klipsch which basically only need an amp playing somewhere in the same county to sound loud, they're so efficient. (That's an exaggeration, but they don't need much power to play loudly, and the 9B would have more than enough reserve to max them out.)
Of course there are other brands such as JM Lab, KEF, NHT, Linn or Vandersteen that would be more in the audiophile realm than Def Tech, Paradigm, or that other one which starts with "K". But while they might also be less readily available for demo and purchase, they would certainly be worth seeking out for a listen.
Burke