Well...let's see...
The Litespeed I had ran DA 9spd (the most recent stuff) which is a pretty bulletproof groupset. I think the constant improvements of the Shimano line over the last 10 years or so has really forced some improvement and innovation on the part of Campy. The current Campy Record offers a 10 spd cog and carbon fiber brake levers. Both unnecessary in my opinion, but I do like the shape of the campy brake lever hood area better when your hands are on them. Shifting in a sprint or hairy situation on Dura Ace I always found a little tricky because of the way the WHOLE lever pivots inward to make a shift. The Campy setup to go to a harder gear requires you just squeeze your thumb down to make the shift. I currently have a mix of the older Campy Record ergopower on my Bianchi, and its hit or miss. Awesome brakes, o.k. shifting, crappy rear axle that comes loose from a silly pressed on race design. But those parts are 5-10 years old, and lots of miles.
FYI, DA is around $950 for the grouppo, Record is around $1350 (both mail order).
dd74, are you a big guy? You seem concerned with flex. If you're 200+ lbs, really strong, or especially tall, you might want to find a fatter tubeset. At some point flex can be reduced just using bigger tube cross sections, because the resulting joints have more real estate for the welds. The old Cannondale aluminum 3.2 "boneshaker" frames didn't flex for beans...those were all business, and destroyed a lot of wheels too because they didn't give at all...
I've also got married, gained 30 lbs., bought a 911. Ride twice a week now...