Ben, you've seen All Select 2 more often than the 3, but that's because the 2's are simply shown off more often. Here on the boards, two of the existing CGC 8.0 2's have been shown, ......the 9.4 has as well.... ...but not for sale except for Gator's 8.0 a while back....
Look at the Heritage archives, there are 6 unique copies of each the 2 and 3, but the 2 appears more often because all three of the 8.0's have each sold twice, and two of those played the resub game, back in 2003 or so, so it's not too obvious. None of the AS 3's sold more than once each.
Ben, you said that you've only owned one AS 3, have you shown it on these boards? I know you've shown an AS 2 on these boards a few times...