Are Phoenix worth spending Zetas on?

Phoenix at least at our level (35m active gp) in TW are one of the better defensive teams. You must use a good squad to beat them or they will eat many equal or lesser power teams because they have awesome self healing. They arent quite as good as a full R1 rebel team on D, but they are close.

Also generally my effectiveness with them went way up when I made Chopper really fast. If he and Kanan start their taunt ping-pong they are hard to beat. Its easy to get Chop fast enough to go first.