There are lots of bikes comparable to the SR71.
Cannondale Road Warrior
After riding all of the above, I bought the Giant last year because it rode the best as is. I really liked the Grip Shifters, and still do. Plus, I got it ridiculously cheap. The Jamis is steel and has excellent components as well as disc brakes, but it does weigh 5 pounds more than the SR71 and a few more pounds than the Giant (I bought the $600 MSRP version, not the more expensive one)
Another avenue you might consider is to have a bike built up. Since the SR71 is $1099 list, you could get a sweet light steel bike built up for the same $. Check out the Soma Smoothie frames.
Yet another avenue you could consider is to find a drop bar road bike you like and do 1 of the following:
1. Keep the drops and shifters and have them put on flat bars, flat bar shifters and flat bar brake levers. This should cost no more than $100. It could be done cheap and sweet at Performance: $30 carbon fiber flat bars on sale; $10 Performance Forte brake levers on sale, $45 SRAM Attack Shorty or R440 Shimano shifters . Those all work with road brakes and derailleurs, though they might have to switch out the stem too (should be free). This way, you could switch back to the drop bar setup down the road if you want to.
2. Have them trade out the above. This should actually save you some money, as drop bar shifters/brakes alone are usually more than the 3-4 things you need switched out.
Make sure you buy a bike that has geometry that lends itself to flat bars.