Re: Non-ceramic Bobbins
i have used tiemco ceramic bobbin holders since they first came out in the 80's and have never had any problems with them whatsoever.
if you are really serious about this fly tying hobby, save a little extra money and invest in quality tools, take care if them and you should have them around for decades to come. replace the junk tools a necessary.
or you can continually spend money buying shittey quality tools and replacing them every 2-3 years.
simple economics tells me to go with quality.
Poor quality materials and tools are destined to discourage beginner tiers and cause greater expense when the time comes to replace them.