Mimosine said:
i'm on the fence about this one too, usually though in my case it's a 4 card 16 vs. dealer 10!
I think it is such a close call.... Fred Renzey (plugging his "blackjack bluebook II" yet again) says to stand if you have a 4 or 5 in your 3 card hand. It is best explained here:
http://renzey.casinocitytimes.com/article/consistency-is-not-the-best-thing-with-16-against-a-10-27377
The 45 rule is good as a way to get most of the benefit but, although I couldn't tell how many decks Mr. Renzey was talking about in that article, or whether it was H17 or S17, the exception to that rule would be to hit all 6,6,4 from 1D thru 8D at least in S17 games.
As to your 4-card dilemma, in S17 games, hit A86A, A762, A663, 9322, 6622, & T222 for all decks 1 thru 8. Obviously AAA3 & AA22 are trivial.
Interestingly, probably only to me lol, one would stand on 9322 thru at least 4 decks.
Once again, not that this matters worth a cr*p, except to people like me suffering from OCD
