I've tried the Equation out on my local house shot, and I love the reaction it gets as a first ball out of the bag on medium oiling conditions. I was able to play a wider angle as well as a little tighter with no fear of the ball getting through carrydown. I would say if the Artillery works similarly, wait on punching out the Equation, but if not, I'd punch out the Equation and bring it.
I'm in the same boat as you in trying to decide what I'll be bringing to league nights this fall, as I'm bowling in two different houses on two different conditions at two different times, so that can effect what I will bring to each house.
Matt