Bryston owners ONLY

I posed a similar question a few weeks ago only it was whether to buy and bridge a second 3B-ST or buy a 4B-ST or two 7B-STs. The concensus was that the speakers' load was the issue since Bryston did not rate the bridged 3B-ST at 4 ohms. My speakers would present a 4 ohm load. The pair of 3B-ST amps would probably handle the load, but run hot. If the bridged 4B-STs can handle your speakers' impedance then you have a good option buy buying a second amp. That said, I'm hoping to get 7B-STs. You might write Bryston...