Terry,

Bob's pretty much covered it. The MC guards are keystone shaped while Cobra's are more oval/round.

I never had MC's on my bike but can say the Corba's work. I dropped my bike in a parking garage when the front tire slipped out on a patch of oil. The Cobra bars kept the bike at a 45 degree angle which made it easy to pick up and no damage.

I'm a huge fan of Corba. Customer service is top notch. Had a part start to flake, they replaced it ... no problems.

Andy