For me, the most round wound sounding of all the flats (that I’ve tried). Never had any stickiness or fret wear (I equate stickiness with LaBellas, easily remedied). There was a period when there batches with spots of rust/discolouration (I had one string with this, but it was free set, so no cause for complaint), but this seems to be in the past. Buying from the Ernie Ball shop on Amazon seems to be the cheapest option for particular gauges (£42 for 45-100).