The best ! I have used 2 other brands with what I thought where good results. This is a class in it's own. I have used it on 2 of my cashmere, and fine beloved merino wool. Great results, finer cutter. I feel more cofident using it on expensive items.
I use on an iroing board. 3 jumpers on one charge. It got sluggish, but realised I had to empty it. It is so good you might well have to empty it before you finish a garment. Love it, will be advocating it to family and friends.