I have been using the .25 coils ever since I got my CrownII. I find them 'fairly' equivalent to my older Crown, they do a decent job with cloud and the flavor still has the Crown characteristic intensity. Not bad, and a good choice if you are a higher wattage vapster.
REPLACEMENT COILS FOR UWELL CROWN II TANK
While I like the Crown II tank the coil heads leave much to be desired. While they break in fast the ones I have only last 3-4 days before they burn out. Before they burn out they are very nice. I am not sure what is going on but the coils need more work on UWell's part to make them right. The real confusing part is some are reporting good results while others are reporting worse results then what I have experienced. I am confident UWell will get this corrected because if they do not then very few will purchase anything they release in the future provided there is a future in vaping.