I have both Ballistic and BulletFlight L2. I only use BulletFlight L2.
I have 12 rifle/cartridge combinations stored it it. When I head out hunting, all I have to do is select the rifle/cartridge of the day and I'm good to go with all the data about the combination pre-entered during a range session. When I get to where I'm going to set up, I range some likely points, calculate a range table that makes sense for where I'm sitting, and I'm good to go.
It takes a couple of seconds to press the wakeup button, flip the virtual switch, and there is the data on scope clicks and windage I need to make the shot.
I dialed and hit several head shots on ground hogs using it this last summer.
I highly recommend BulletFlight L2. It has everything I need and nothing I don't need. It's twelve bux or something like that. Heck of a deal. I didn't get BulletFlight M (the military version) because I didn't need the extra features.