Lehner for 14cells

[Dafni]

What would be a good decision:
2800XL or 2400XL (14cells) for my RevoXX?
What exactly does "(very) easy on your speed controller" mean? (compared to my Feigao 9L)
Or what about the 1940?

What would you suggest? I'm looking for a reliable motor that will push my Truck to +35mph. At the moment I'm having a very hard time keeping my temps save, no matter what I try.
A fan on the ESC is fine, but I think a BL motor should handle a less than 10 pound MT without fan.

Will the Lehners run cooler than the Feigaos?

Thanks
DAF