Hi there. I have a 6" backing plate with my DA polisher and a 6.5" lake country ccs cutting pad plus some others. I was wondering if there is any advantage using a smaller backing plate like a 5"? I was recommended using that size as pads are cheaper too. But is there any real performance difference between the two? I don't want to buy a load of 6.5" pads if smaller is better. What's the standard size people generally would use especially for light cutting (orange pad). Thanks. Mark