2 on everything except the Falcon which has 1 (its weight was starting to damage things) and one Firespray has 3.
1 peg or 2?
I use 0 on my A wings... They like to zip around following the surface. And then I try my best to distinguish the other ships... For example, if I'm flying 2 X wings, I'll put one of them on 1 and the other on 2. Typically the higher the pilot skill, the higher probability it will have 2.
Since my B wings rotate, one of these days I want to put it on just 1, just to be different.
1 Peg. 2 Always looks silly and frail to me. The larger ships and B-wings need two pegs though. But that's fine. I may change that with the Large ships being up so high though...
I normally run unnamed at 1 and named at 2, unless its the bwing as 2 is the only. For fun I have run a guy or 2 at like 6, just to be crazy, which pushes others to run As at 0.
If it looks like my opponent is running at what could be the same height I put mine one higher just to tell the difference.
I have a ton of plastic tubing from my WH40k Ork army so I could do a ton of pegs at varying heights...