The best chain for this bike would be a Sedisport chain. I used "tons" of these chains: cheap (DFL 10.-) and good quality. Or, even better, the silver colour Sedis Pro. I have one, but unfortunately it's too short. Such a shame.
I have to be satisfied with the SRAM PC 870. SRAM took over Sachs, that acquired Sedis. I picked the PC 870 just because of the silver colour (nickel silver outer plates, grey inner plates). The PC 890 would have been better because of the nickel silver inner and outer plates, but the price was too high.
Because the Campagnolo Super Record chain ring is narrow (3/32" or 2mm), I had to select a narrow chain also. So, a 3/32" derailleur chain, but not for 9, 10 or 11 speed. This, in combination with low price and nice finish, doesn't leave much to choose from.