Seem to be clean and on the first pair, excellent flavour.
I got 0.244Ω cold resistance from a pair on a DNA, which is pretty accurate once bedded in with the legs clipped.
They seem to be between 3 & 3.5mm internal diameter though, which is slightly odd. Wen I ran the numbers on Steam Engine's wire wizard it reckoned they are metric sized (2*0.3mm with 0.1mm wrap with 3.25mm ID) not AWG sized, which is fine by me, but worth knowing before you buy.
Exact dimensions may matter, particularly in a tight RTA chamber, and OUTSIDE diameter is 4.25mm and coil length 6.25mm, as close as I can measure.
I hope this is useful to somebody, but it bears repeating that my experiance with them so far has been excellent.