The stabilizer depends on how it is going to be used. For my FSL I use the Sulky Ultra thick and I buy it on Amazon. Most of the stabilizer I get on Amazon because we have Amazon Prime and thus have free shipping most of the time. If I am using it on towels I do like the heavier Sulky, because it doesn't tear apart like some of the other brands. I will have to check out the Allstitch. My quick look prices looked very good.