Adrian, I don't know what you mean by second hand. Frankly, having owned a Classic Rock or two, a Rev and a couple of other balls, I wouldn't buy a used Columbia TEC or TEC2 unless it had less than 20 games on it. Now, on pure performance between these two, the Classic Rock was better for me, kept polished it got through the heads cleanly, and was predictable at the breakpoint. I wasn't impressed with the Rock Pearl.
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"I don't mind if you don't like my manners. I don't like them myself. They're pretty bad. I grieve over them on long winter evenings."