Gunners Up vs Zinger Winger

I had one of my Gunners Up units go out of service due to possible servo problems and have decided to purchase a new launcher for the time being and if I ever get the old one fixed I will have a spare.
I would like to hear from those who have used both Gunners Up and Zinger Winger and hear which one you liked best.
I will most likley go with Gunners Up because they have been good units but with one down I can't help but look at the others.

Thanks