When I resumed violin a few years ago and began to study Bach Sonatas I found originalists advocating for playing Bach with an older Baroque style bow. It turns out a decent bow can be had for under $100, so I got one of those – shown at the bottom of this photo.
I also discovered carbon fiber bows selling under $100 so I picked up one of those as well. I have found the carbon fiber bow to be as good as the pernambuco bow for my style of playing (though as I noted in a previous post my style is not … soft). The baroque bow has also been fun to use: It’s shorter, lighter, and more delicate, so it forces me to practice a more gentle approach to playing.