how does the amount of dome affect these? i just re-stocked and they are much domier than my others. the more domey ones are 166 green, with the older stamp. the flatter ones are yellow with the newer logo.

I would say not much I have never met an understable Pred, but i do think that the solid color is more stable than a clear plastic Predator.

The dome will affect high speed stability. A domey Pred will definetely hold out/fly straight longer and will have more lift as well. The low speed fade is the same for all Z Preds that I've ever thrown.