For fights under 10K, and against most opponents the G14 is my ride of choice. If it's above 10k/and or I'm fighting nothing but Ponys and La7s, the K4 is my ride.
The G14 just seems to dance a little better. Don't get me wrong, the K4 can dance too, but I just prefer the G14 at lower altitudes for some reason.
Just fly them both for a while, get the feel of each, what they like, what they don't like, what you find more to your style, etc etc. They are both fun fun, and to a joy when that 30mm lands!