I have flown all but the Pulse XT

My personal favorite "Second Plane" of the other 3 is the Tiger II, but all 3 (4 including what I have heard about the Pulse) are excellent. You raelly can't go wrong with any of them.

It depends on what type of performance YOU are looking for.

Of the last 3, the Tiger is the most stable, but very aerobatically capable

The Stik is the least stable and most aerobatic, and the 4* is between the two