ok. everyone on here that uses gels knows that the lights are rediculously expensive. I bought a used 9 watt off ebay and I've got a kit for the ECO gel system. I was planning to play with that to get my practice in before i offer it to clients. Question is, am i going to need a different light for every system i play with until i settle on one? why are there so many different wattages of lights and how does the amount of wattage affect the curing of the gel? is using a 32 watt faster and more efficent than a 18 watt or can you use an 18 watt for a longer amount of time and achieve the same results? I really dont want to talk to the companies because every company wants to push thier product and thier light so i feel thier opinion is biased... what do ya'll think?