As a 60+ year "collector" of PM Numismatic products, who has purchased TPG products since they were originally offered, I find that generally the CAC bean correctly indicates a product "above average" for the TPG grade. Since the TPG grades have varied considerably, in my opinion, since their origin, you may more often find a less than technical grade CAC beaned coin. I may look at a dozen CACed coins to find a couple, that as an AVID buyer of their product, meets my technical preferred grade preference. I've only found 1 so far this week, just ordered from a very prominent dealer, after some negotiation. I looked through more than the normal count to select that coin, as it appears I've considerable competition for their better products. As with any purchase, buy the product, not the wrapper. JMHO
I think I will start the RCAC the Re-certification certification acceptance corp. seems like a good business to get into, 3 cent sticker, $15-30 bucks a slab,,, lol verifying the verifiers. the next logical step is to re-verify the verifying verifiers.