Thanks Tom for posting this. I've had the Nashbar trekking bars for several months now and really like them. I'm planning to put bullhorns on my new bike when I get it in a few months since I am still certain that riding in the drops for ANY length of time will place too much stress on the implant in my wrist. Nice to know there are so many other options out there [edit: than flat bars].
Oh! Good! I was just about to order some of the Nashbar touring bars. But... if you're happy with them, why are you going to switch to bullhorns?