I started playing ring games a short time ago, so probably I can’t really judge.
When I have a little time to play, I can only be glad if I can find a place at one of the high stakes tables, without having to wait too long. Sometimes there are 2-3 people on the waiting list. So I must be content with whatever I find there: sharks or fishes, aggressive or passive players, nice or rude people, and the only position which is available. Actually until now, if I remember correctly, I have never had a choice.
Yiazmat, is it different for the tables at which you play? Do you know all your opponents so well that you can categorize them? And do you really wait to play until the most convenient position is available?
Or is this only a theoretical issue?
Well, if I had a choice, as Joedirk said, I’d sit left of the most aggressive player, to better control his actions and play accordingly.