Just getting ready to order our first tandem, a Co-Motion Speedster, and was curious if the optional Avid Mechanical Rear Disc is worth the $165. If you don't add it, you receive Avid Single Digit 7's F & R. Being our first tandem, and never having ridden a disc equipped bike, I'm not sure what to do on this. Total team weight is about 300 lbs. We live in Colorado, so mountain riding might be a possibility.
Any feedback would be greatly appreciated.