I got my LRP x12L 4.5 in this weekend. I ran it with a 13t and a 14t pinion on a medium to large outdoor track. After the 7 min main with the 14t pinion the motor was 170 and the esc (RX8 no fan) was 140. So far the LRP motor has been my favorite motor. It pulls the 1410 but is super smooth.
heres the track. (annoying video (not me) but good view of track)
http://www.youtube.com/watch?v=cBouTMgtfIo