The Martin J8 is similar to the Bitz, and has an adjustable indexer that allows you to precisely set the orientation of the fletches, which the Bitz doesn't have. It is about half the cost of a Bitz, and does everything the Bitz does. The Bitz puts a little more helical on the feathers than any other fletching jig I know of. The Bitz magnet is very strong. If you find a Bitz indexer you like, or if you're happy with the standard Bitz indexer, or if you get a Bitz indexer that has a blank row that you can drill your own holes in, you'll probably be happier with the Bitz than anything else. But whether you're twice as happy is something you'll have to judge for yourself.