This beatutfully designed coil is perfect for someone who vapes between 10 and 14W. (I vape like I used to smoke, not mouth to lung) A single coil last me roughly 7 days as I user to smoke between 15 and 20 cigarettes a day. Full flavor till the last, quality! At £8.99 for 5 you cant get better value for money for such a superior product. I have tried 2 other coils with this Vape. I tried a compatable from another retailer, NO! Lasted 2 days and flavor was bland through out. And a higher wattage coil.(my own fault as the higher wattage is designed for mouth to lung. My knowledge of these matters was little then) So, to summerise. I would recomend this coil for a vaper that vapes like they smoked.