Sorry but there is no one best line. I'd say use braided because it doesn't coil but it can ice up pretty badly. All lines ice up though, just braided more than others. It's not an issue if you're in a tent. Otherwise you might just stick with mono for your lighter test and braided for 6 lb and greater. Pure fluorocarbon might work because it doesn't have memory and it's pretty resistant to ice. But it is expensive as hell, can be brittle, and knot choices are limited. Don't use high friction type knots such as clinch knots or you'll be breaking off more often.