I agree go for the eye-appeal. The value of the CAC sticker is tied to the strike of the coin within the grade, not eye-appeal, so that is where the value lies in the CAC sticker for the investment value.
i have to agree with you, what is sad is that you have sets that you are competing against with none or just one NGC coin in the set, why are they not competing in the PCGS Registry instead? Something is fishy, just my two cents.