The big deal about the Neu motors is that they are four pole motors and they are much more efficient than the lesser expensive motors. As an FYI, I was on the phone today with the guys at Quark, and they told me that their esc runs the best with the Neu motors (actually, four polers, but he used Neu as an example). Something about the Neus liking the timing that the Quarks run.

Four poles mean more torque. Efficiency means cooler running. A Feigao, for example, (not looking for an argument) runs at about 80% efficiency. A Neu runs at about 90% efficiency. You might think that 10% doesn't mean much, but if you think about it, the Neu is only half as inefficient as the Feigao, so it will only generate about half the heat of a Feigao.

I think that 2200kv in a truck is way too much. Especially on 5S. I'm running an 8XL on 5S and I need to slow it down. The 2.5D is just where you need to be. You'll get really good speed, lower heat, and better runtime.

Personally, I'm debating on whether to get the 2.5D (1700kv) or the 1.5Y (1500kv). Just think. If you get the 1500kv, you'll have good running now and then when someone release a kick but controller, you'll be ready for 6S. LOL.

OK, really. I don't own a maxx anymore, but if you want a kick butt setup, I'd go for the 1Y on 4S or the 2.5D on 5S. You won't be disappointed.