The wheelsets and wheelset makers your LBS suggested are all good examples of solid brand-name products; between mid-level Campy wheels like Neutrons and Protons, the Mavic Ksyrium line (actually 4 different options there, ranging from $300 to $1000), and the Velomax label, you've got a roundup of popular, proven options.
The Ksyrium variants, from the bottom-end Equippe to the high-end SSC SL and its pricey SSC SL TDF sister, have a reputation as great all-around wheels, durable enough for everyday use and heavy training, and stiff enough for serious racing. They aren't the lightest wheels for the dollar, but they're certainly in the lightweight ballpark as modern wheels go. The SSC SLs, in particular, have a reputation for stiffness to the point of discomfort -- a matter of preference, really. Most riders appreciate the snap. As you move down in the line through the Elites and Equippes, the grammage goes up and the hub quality goes down a bit, but so does the price. The entire line, in general, is solid.
I've never ridden Campy or Velomax wheelsets, but both, as labels, also have excellent reputations. Campy wheels are generally classic, well-balanced, all-around good choices -- exceptionally light, striking good compromises between comfort and stiffness. Velomax, a relatively new company, quickly earned outspoken fans in the cycling press and among pros for offering a similar balance of good traits. Fans sing about their durability and ride quality, and they're extremely lightweight. As they gain popularity, they're becoming more and more common in shops; I wouldn't worry about servicability.
Dave brought up the other good option, which is the built-wheelset -- the options are endless for combining hubs, rims, and spokes in traditional configurations to construct a wheel to suit your needs. Nearly any shop will do wheelbuilding, and some big mail-order houses (like Performance, or Colorado Cyclist) will assemble wheels to order as well. Chose a hub from a major label, like Campy, Shimano, Chris King or others, and combine them with spokes and a rim from another reputable maker -- Mavic, Velocity, and Ritchey make good ones.
Good luck, and have fun with the new bike.