I switched instructors recently and like the progress I've been making with him, especially with my bow technique. I've gotten to the point where I've concentrated solely on my French bows and my German bow collects dust. I stopped by the shop where I bought my German bow and they offered me the full purchase price on a trade toward a higher priced bow. I took a JonPaul pernambuco bow priced about $1k out on trial. So far, I like it since it's lighter and seems more articulate than my current French bows (Ary and H.R. Wilhelm). I took all three bows to my lesson tonight and let my instructor play them. His opinion was that the JP wasn't significantly better than the other two (although we both agreed the Wilhelm was a bit tip-heavy). Then he made a comment that took me by surprise - instead of getting another bow of the same price, why not upgrade to something in a higher price range? My idea was to sell either the Ary or Wilhelm and keep just two bows, but then my instructor also said that moving up would be more beneficial for my long-term playing because he found faults in all the bows he tried. I thought I was still too new to move up, but he retorted that if I plan to stick with the double bass and money isn't an issue, spending $2-2.5k now would be a good investment in my long-term playing. Thoughts/comments are welcome.