I've been really pleased with the tone I get using D'Addario Regular Light Gauge Nickel Wounds. Just put a new set on last night actually, and I'd say it's got just the right zing. Of course, I play a Cortofusion so I'm working with a slightly different tonal palette than your Cortobass. Those three videos I posted on youtube this week and mentioned in previous posts were recorded with the same type of strings, but they were 6 months old and had flattened out a bit. I think the tension feels great and they have the right amount of brightness to balance well with the 'Fusion.
What kind of tone are you seeking though? If you have a sound in mind that you are after, I would just call up Scott and ask him what strings he'd recommend you try out. Having gone through many himself, he's the man to ask.