When I built my current CX bike, I built it with parts I had on hand and parts I could get a bargain on. To that end, I had some crappy old Shimano psuedo aero levers for braking and some cheap KORE bars I got for a song off Ebay.
Unfortunately, this cheap setup had some serious drawbacks.... Number one, the bars were reverse radius ergo bars, and they were extremely deep drop. Frankly, at my age, deep drop bars are useless, and I just could not get into the drops comfortably. Number two, I hate ergo bars... they just suck.
The levers were another problem. The interface between the bars and the levers created a deep 'saddle'. This saddle basically caused me to hang from my thumbs when on the hoods. It was/is painful. On top of that, the hoods were old and coming apart.
Luck struck today out of the blue... While riding with my buddy Bill, he mentioned he had some stuff he wanted to sell and was about to put a bunch on the local cycling website. When we got back, he had a set of used Cane Creek singlespeed aero levers. These are the Campag copies and have a great shape to them. He also had a set of classic bend, shallow drop no-name bars. I got all of that for a twenty.
The new bars coupled with the new left brake lever (right is a DA9) makes for a much better position and much more comfortable hand positions. I have no idea of weight, but they are so much more comfortable, I'm not sure weight matters. Now for some new bar tape!!!