My current all-day vape is Decadent Vapours 36mg Absinthe from TW, which uses their platinum line nic juice.
One thing I've noticed about their platinum line (which is supposedly sourced and mixed in the UK) and other lines (which I'd assume are all based off the Chinese suppliers) is that the platinum series doesn't 'gunk up' my filter material. After a week and a half to two weeks, I'll replace the wadding, and before, it was always dark brown, and on occasion, black. The platinum line hasn't done that to me (yet, anyway).
Once I get my order from lorann's in, not sure if I'm going to switch my primary vape... have a bottle of 54mg flavorless platinum waiting to mix down. I ordered teaberry, sassafras, blueberry, guava, and pomegranate.