Thanks for the comments guys. I have a Mini zinger and a Gunz up launcher. I think they throw pretty much the same, except the Gunz up will throw a bit father because it is longer and has more tubing. I do think the Zinger is a better built machine, more precision and the pieces come together a bit better, but the end result is pretty similar.
One adjustment I made on the Gunz up was to reverse the folding braces, so they fold up with the pivot going up away from your hands. I forgot to unload the tubes from the short hook one day and it collapsed, caught my thumb inside the folding brace and made a nasty cut on it. My mistake completely, but with the braces reversed my thumb cannot be "caught" inside the brace again.
I have also found back when I used to use Strong Arms that you can get bigger throws if you put larger tubing on them. Just large enough that the tubing will not roll through the pulleys until there is a bit of stretch in them. Once they thin just a bit they roll fine. Neither of my current winger have had the tubing wear out yet so I have yet to replace them. I am thinking of getting a third so I can throw a triple with all birds. Now I use Bumper boy to throw the "go" bird". Still use Bumper Boy for a lot of training but the younger dog does much better with birds, more excitement. Older dog never needed any inticement to be very excited about retrieving, I got kind of spoiled having such an easy dog to train.