The one thing I am missing in all of that text is your gear ratios.

The 1410 4pole is a 3800kv motor, but has insane tourque.
What is the biggest pinion & smallest spur gear you have tried?

I don't hear too often that the 1410 is lacking.
How hot is the motor after runing?

The VXL motor is unused by many in racing because it has less useable power than the 1410.
The 1410 has to be geared properly.
If you are running a 21/86 I would seriously look into something like a 25 or 30 tooth pinion & a 76tooth spur just shooting from the hip...

Think of a big motor in a real car & leaving it in 1st gear... Shift gears!