One of the coolest aspects of this Hobby is being able to experiment with different set ups.  Before I built this bird, I didn't think that 6s was necessary.  I was happy to fly my 4s lightweight 5 inch and my toothpick Micros.  That all changed once I got this in the air.  I'm not sure if its just the power or the amazing noise this thing makes but I am in love.  The raw power and torque is intoxicating.  Flying the Leviticus back to back with my lightweight 5 inch with Brotherhobby 1507 Avenger's you can actually feel the weight difference, but thats not a bad thing.  The weight gives this quad a certain authority that is simply awe inspiring.  It feels like a fighter jet with explosive power.  The larger battery and motors seem to smooth out the top end of the throttle and delivers more power than the little motors can only dream of.  This is now my number 1 Quad.