This trimmer is the truth.

https://www.amazon.com/dp/B007VB50JC/ref=cm_sw_r_awd_rXd-tb05W6JF

Source: hairyman

http://www.amazon.com/gp/aw/d/B007VB50JC?cache=9c67bb98fc3eafaf72117b8a2f522ff9&qid=1402250310&sr=8-2#ref=mp_s_a_1_2&precache=1

This thing is awesome. It even has an extender to reach your back. I have one and it's real good.