Some people just want to go up to the max they can. Nothing wrong with that. I assume op has a drag and wants to take it as high as it will go. Everybody vapes different. I don't go much above 80w unless I've got a fancy coil in and even then the vapour coming off it is probably the same as I can get off of 60w with a coil I prefer to use.
Op try the demon killer coil ring set you can get if you're not building your own. It's about £10 and you get load of different kinds of coils to try, some that might go low enough on ohms for you to vape at higer wattages. Then you can find what you like and buy better made ones online of the same type.