Optiboot is what Arduino UNOs are shipped with, so the official bootloader. Once you get these, put them in an older arduino (Duemilanove etc) and choose UNO on the board list to enjoy twice the upload speed. I'll PM you my address too.
I will be OK to trade with you. I just don't know what I have you may need or I may get a part for you in Toronto that you can't get in CO. <-- I don't know if you live in Denver, CO. Getting parts in a small town is tought, Not in a big center.