Agreed on the analog outs. Plus, if you use the Oppo, you'll have to use Oppo's bass management which likely isn't as extensive at your BK.
I'd stick with the BK. Unless you own the SE Oppo, it's unlikely the Oppo's DACs are superior to your Ref 70's.
I'd stick with the BK. Unless you own the SE Oppo, it's unlikely the Oppo's DACs are superior to your Ref 70's.