Hi, I have tried Scorpion, Mongoose, Magnex and now Exstreme. They all seems to be a bit loud, but only when going .... . And all is "booming" inside around 24-2800rpm, so it all is down to personal taste....I think.

The one I'll keep will be the Extreme , because it fits so well, and its so easy to work with.......compared to the others !!! So best choice in my opinion is ....... the EXTREME zorst !

Yes the EXTREME is essentially a Mongoose with a 4" slash cut tail, and it's cheaper, it's easy'er to fit and take apart and last but not last it "fits" alot better than the "Goose".... my opinion ...

CheeRS