Which chains for BX2360?

[newdeal]

I am on tirechains.com as I have noticed others have bought chains there for their BXs. I know my R4s are 26x12x12 on the rear but I see there are two options for chains, medium duty and heavy duty. Which ones have you guys been buying? If medium duty will do the job then I will save the cash and get them. Also have you been putting chains on the front wheels as well? I have heard there are clearance issues on the front wheels but I wanted to confirm this is the case