if i could only bring one rod length and action for most typical aug fishing applications i would probably pick out an 8 1/2" med hvy or heavy leaning more to hvy if you're going to have 10's or big rubber depending upon how the particular manufacturer designates thier actions..
if you're not throwing 10's or big rubber med hvy would be fine
most heavy actions are not so heavy you can't efficiently throw just about any size blade bait,topwater,or crank,but still heavy enough to throw all but the very biggest rubber and swim baits.