I think you will find most use what they have.
The folks I bought my sewing machine from 17 years ago swore that Coats and Clark would ruin it, that what they sold was the best for my machine. When I stated that I would have to buy a less expensive, less fussy machine I was told it would work fine, but I would need to regularly clean my machine.
I regularly use metalics, silk, polyester, blends, cottons, rayons, ect. Guess those folks at the Bernina dealer did not know what a fabulous machine they were actually selling that could do the crazy stuff I ask my sewing machine to do.