I'd love to see a photo of the Dura Ace AX bike...does it have the full group with the brakes, AX bars, AX stem and AX water bottle? There's something about that group and the aero tubing on those bikes that really does it for me. I hope like heck I get a shot at a DA AX Lotus again someday.
I think your standards for paint are likely far higher than mine (which are admittedly lax). To me...that is a gem and not something I'd use as my "lock it up around town" bike. I'd get a Super Course, a Raleigh Sports or a rigid MTB for that.
If you check out the ebay pricing on most SR vs. Superbe Pro...it goes for the same. The Suntour might even be selling higher on average right now.