Quark and Neu 1515 1Y is good combo I do agree with it .If you will get the Quark ,get the heatsink for it here
http://www.rc-monster.com/proddetail...=RCM008&cat=21
Brushless Jammin Truggy on NEU 1515 2.5 D on Monster mamba max with maxamps 5000mah 6s Lipo
Gorillamaxx Revo CF version on Mamba maxx ESC with NEU 1515 1Y on Maxamps 4s 8000mah Lipo