Totally agree on the cool factor! Mine will stay in the collection and its my main stick, although my ability and its suitability are sometimes in question...
On string:
I just put Poly Tour Pro 120 in mine few weeks ago, was using champions choice (incredible) until winter hit in my country, then switched to strike 1.25 which was also very good.
Poly tour pro initially felt too soft, overpowered and a little muted compared to the strike that I was used to. But now after a few hits I've gotten used the 1.2mm pro and don't mind it. Comfort is now next level and it really highlights how buttery smooth and soft this frame actually is. Serve speed is also up and manoeuvrability is also better as strike 1.25 is a heavier string. If you like a crisp feel, pro 1.2mm at 50 lbs will not deliver it in this frame, it does in an Ezone though as a comparison.
Getting back to Champions choice, that is crazy special in this frame and if funds and your local weather conditions allow, that's what id be using. Tension at least 55 for me and in this frame I found using the same tension on the cross worked better, both with launch angle and playability duration