i run an 8xl in one of my Maxx bashers, on 6S and i gear it 65/24. my temps are about 150-160 after 8-10 minutes or so of speed runs up and down my street.
I also have a handmade neu 1515 1Y that i have geared 56/25 on 6S in my other Maxx that runs about 150-160 after about 20-25 minutes or so.
when they're geared equally, there's only about 3- 4mph difference in top speed, but the neu seems to be able to run twice as long without any cool down time.
I love the feigao motors for speed runs...you can throw alot of voltage at them for short bursts and be fine. however, if i was looking to actually run a whole pack or race, the neu would be the obvious choice for me.