I can't really see the wrinkles in the pseudobulbs on any of them. If you can also provide photos of the pseudobulbs up close, that'd help.
I recommend trying to locate an affordable viral test kit to really know if your Brassostele is truly infected with a virus or not.
Everything else looks fine. The black streaks you see on the leaves of your Bc. are not signs of virus, they are healed over scars from physical damage, nothing to worry about. If you're unsure, however, you may want to test them out and see if they are infected with a virus. As far as I know, I don't think it is.
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Philip
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