I got my bars, installed them and went for my first ride with them today.
I decided to go with the 45 cm version. They are 45 cm at the very end of the drops (where the plugs go). There is a very smooth taper going all they back to the flats. At the hoods they are 42 cm (depending where you mount the brakes) and they keep tapering to the flats.
Overall they are very nice bars, especially for the price ($27). They have a nice finish and feel and are pretty lightweight.
In retrospect though I probably should have gone with the 42 cm version. I am not a large person so the 45 cm are a bit wide for me. It's not bad though, and when climbing it is nice to have the width but 42 would have been a little more ideal. Oh Well. I can always swap them later.
Thanks for the help!