I have a Brother, white & Viking. I have used many different kinds, includint poly from threadart. funny but most of them were fine but sometimes Brother balks. different mcahine act differntly to thread. I use rayon on shirts etc but on wahsable like dishtowerel & the new craubbies by Dc I used poly. Daughter is doing bas & she used poly. Holdas up better Try some out before investing in a sampler. I have a ot of colors--navys that i never use.