I have a $2,000ish budget (don't mind going up a bit if it's worth it though) to buy a portable ball machine. I have it narrowed down to the Spinfire Pro 2 and the Lobster IV. My main goals is to use this mostly for cardio...so I want it to be as fun as possible so I do it more and more. They both seem to have little things where one is slightly better than the other. But major advantages of each (for me): Spinfire: the internal oscillation that supposedly makes it harder to tell which direction the ball fires out from. For anyone that has used it, does it really mask the direction? or can you still tell if you look close? Lobster: truer randomness with speed and spin also being random. So these two features are my main decision point. Just wondering what any users of either machine (or similar) might value more between these two features. Thanks for any input!