Specifically materials for hair jigs for me. 

Most of my tying supplies are hareline brand and I buy from reputable places only. Major retailers only! 

I've always been pleased with Barlow's bucktails and their other tying materials.

Have a look around here if not already familiar:

http://www.barlowstackle.com/Jig-Tying-and-Fly-Tying-Material-C19.aspx

I use various places to buy, Barlows Tackle being one of them. I purchase from LPO, Janns Netcraft, Lure Craft, and Crazy Angler Tackle. If you look around and take a few hours, you can assess which products to buy from which place.

there's also bears den in taunton just off 495

My local store caters to lure makers, If I were you, I would go to a few and look for some tying supplies. 

Lure Parts on Line

I like "Living Rubber" for jig material and have used for a number of years.  Fly shops for some of that little extra stuff.