I use hobbyking batt & esc/motor for 2 years now.(offroad 2wd )
Works great!
Motor has a nice powerband, esc stays cool and is smooth.
you have to set your EPA to 100% for a good setup.
Packs have plenty punch for offroad, nano's are even better!
http://www.hobbyking.com/hobbyking/s...00Kv_100A.html