I switched from Rotor to Spire.
I initially found it lighter and quieter, but then I found as I started to play faster the speed feed I was using would not take the paint quick enough, and I was losing at least 20 balls from my pod onto the floor.
I then tested the GI hopper with the built in radar and found it was not very power efficient, the batteries did not last a day.
I have now got another Rotor and now don't understand why I changed!!