Both will work well, but understand that if you have actual scratches in chrome plating they are darn near impossible to remove due how hard chrome is. The new Finishing Metal Polish is great on chrome (truly awesome on billet aluminum, by the way) but the Chrome Polish is a touch more aggressive and may do a better job of deep cleaning somewhat older chrome. If you've got brand new, high quality chrome (yes, there are low quality chrome finishes) that you want to keep looking really nice, the Finishing Polish is the way to go.
For the record, of our three new metal polishes, we do NOT recommend using the Heavy Cut on chrome as it may very well haze the finish. Removal of that haze on a surface as hard as chrome is no fun at all, so stick with the Medium Cut or Finishing Cut on chrome.
