As stated previously, marabou and fox is just about perfect for tying smaller jigs. If you are tying larger jigs( bass, pike, etc) Yak hair and if you can find it, polar bear hair make excellent jigs. I tie very large (14-16in) flies for billfish, and these are awesome. Use your imagination to come up with what you want out of it. When tying bass jigs, I usually use a combination of bucktail, marabou and fox to acheive the look and movement I want. Experiment, and let us know how you make out.