I'd agree with Keith except for the blades. I like the gen 1s.
The twos are an abortion, stay away.Worst of everything.
The gen 1s are narrower chord and allow for more high speed maneuvering with less drag. They can stall out at lower speeds or if you overload them.No big deal as long as you know the signs.
The 3s have a longer chord(width) and maneuver well at low speed but due to the extra width create more drag in turns and I would assume more drag in general.


"I said, now, I said ,pay attention boy!"

The cure for anything is salt water - sweat, tears, or the sea
Isak Dinesen
If a man is to be obsessed by something.... I suppose a boat is as good as anything... perhaps a bit better than most.
E. B. White