I don't know anything about the Cobra but am familiar with the Power Commander because that's all I've ever run. I think you'll find that more shops will be able to tune your bike because they are also more familiar with the PC over the Cobra.
Regarding the speedo, I recommend and use the Speedo DRD. Simple to install and program (under 10 mins total). My '06 is -1, +2 and the DRD is perfect.
Welcome to the site btw.
Regarding the speedo, I recommend and use the Speedo DRD. Simple to install and program (under 10 mins total). My '06 is -1, +2 and the DRD is perfect.
Welcome to the site btw.