George
Good job, so proud of you
Check out the Harmonix and Wywire power cables. I am using the Harmonix X-DC2 on my bda and wywires on my bdp. The Harmonix pc is very analytical. Its fleshes out all the cymbal and high frequency info but the bda keeps it musical. I am not sure how well that cable would work on just any gear due to its analytical characteristics but the bda loves it. Its a nice cable brand for the bda.
The wywires is too. The cable signature on all his stuff works good with Bryston. If the Harmonix over energizes the bda the wywires tames it up. Assuming that you have the gear downstream to hear this (saying you do is an understatement)
Those two cables work great together and you should check them out if you can.
On the xlr front the Wywires xlr is my fav. On the rca the 75ohm Atlas opus is my fav but the wywires is respectfully close. The xlr in wywires gives you all that voltage drive that opens up the soundstage and you get the wywires cymbal signatures and nice treble tone from it. It doesn't break up the prat like most digital cables do. The Atlas opus is great rca too. You lose the voltage drive off the xlr but it has such nice vibe to its hard to give up. You need a bnc connect on the Atlas. I can get you a good bnc adaptor one and mail it to you if you want.