It's an interesting question as to which has me the most intriged. The Mean Machine is interesting simply because it's a Machine with the robo core, but, do I really need another heavy oil ball as I have the Robo and GP2 already. The Inertia is really interesting...the core looked sweet and the cover stock is very, very interesting. So....I'd have to say, the Inertia, at this moment.
Chuck