Anybody experiment with motors?

[JThiessen]

Has anyone, prior to going brushless, experimented with alternative motors in their emaxx? I'm looking for solid testimoney on motors like the Graupner 700's, Dewalt 820's, Johnson 770's, even some of the airplane motors like the Astroflight Cobalts...
There are TONS of electric motors (brushed) out there, but there doesnt seem to be too many who have tried them out. I just picked up a Super Duty ESC, and am chomping at the bit to get something new under the hood (NOT brushless!!!!).