The reality is the Bryston is a two channel preamp with a rudimentary surround package bolted on. So it is designed to do well in this area, an area where it pretty much equals the 861. The Bryston after that is a basic surround processor, with little software sophistication.
It is designed specifically for people who would be inclined to use their surround sound system for two channel, which a great deal of people on this forum would qualify. I am surprised that almost everyone doesn't own one, for many it integrates without compromise, if you're stuck in 2 channel world. :)
Using the 861 as a two channel analog preamp is dubious at best and not reccomended. Not because it is a poor performer but you're not using it for what it was intended. The reason the 861 costs so much is exactly why Ttowntony bought the Bryston. he Meridian is very sophisticated (the Bryston is the opposite) and complex in its software, most people in the audio business (ie dealers) do not understand a fraction of what the unit is capable of, some have even been compelled to call it a toy. This sort of reasoning based on gross misunderstanding means only a smaller fraction of audio consumers understand what the 861/G68 is all about.
The 861 stands alone as the very best surround sound processor on the market, nothing is close for a purely surround perspective. Yeah there are some pretenders disguised as surround processors when all their design team knows is two channel, so you get the equivalent of a dual processor Pentium V machine and then they run Word Perfect for Dos as their software on their advanced machine if you get my meaning. Mo' betta' Hardware is not the answer in surround design mo' betta' software is.
using an 861 as an analog 2 channel preamp, is like having a 2 speed automatic transmission with Overdrive installed in your 456 Ferrari.