[vcf-midatlantic] Which terminal for Prime 6550?

As discussed the other day: we'll use a Tektronix terminal with the DG Eclipse and an ADM-3A with the hobby systems. PDP-8 gets an ASR-33. That leaves the Prime 6550 (and also the PDP-11/785, but that one is easy because we have a selection of DEC terminals). So... which terminal (that we might have) is the best choice for the Prime?