Platinum - It's not that there's a huge number of stock motor manufacturers...most of them come from the same place :-)
Might as well buy the motors from the source!
I got a couple really good P2K2's from Trinity for the year that I ran nothing but stock at electric races, but even then I was running Monsters in stock truck. I think they're a lot more forgiving when it comes to less-than-stellar batteries and they're more forgiving when it comes to gearing.
And they produce tons of power!