As the the title says, I'm curious as to which jig you would choose if you could have only ONE. My current favorite is Strike King's Hack Attack Heavy Cover Swim jig in bluegill color, with a Rage Menace trailer, rigged so the "tails" are vertical. The I have it with me, I'll dip the tails in Spike-it dip.
I have a broad selection off jigs, from finesse to football to you-name-it, but the swim jig is my current favorite. I have caught a few fish on a jig a friend of mine made for me. The "weedlessness" of a jig is still an issue with me. I tend to throw them just about anywhere, because they're "weedless"....and wind up having to get unstuck much of the time. Still learning how to work a jig in cover.