Depending upon your budget, you might also want to look at Surly.

I've ordered a custom Waterford for my summer steed. High-end steel, light weight. So far, the experience has been outstanding.

I'm also seriously contemplating building up a "slush-kicker" for winter riding. It won't need to do snow, but it should be able to handle really rough, gravelly roads with coatings of melt. I plan on using it for gravel bike trails in the summer. It will be full fender, wider tires. My needs are similar, but my budget is much smaller than yours. Bikes in the market include the Salsa mentioned previously, the Surly bikes (Cross check or Pacer--you might want to check out the Long Haul Trucker) and Bianchi Volpe.

Pay attention to fit. If you're shorter in the torso, all of those bikes, including the stock Waterford/Gunnar's have long top tubes. If you also short you may not find a perfect fit frame.