I am a cat 2 cyclist and am building up a winter bike with spare parts I have laying around (Scott aluminum road bike with apex components and a rival crankset). My bike i train on all summer is a tarmac sl4 with sram red and a quarq power meter. I am debating on getting a stages power meter for my winter bike so I can do endurance rides and other workouts that are low intensity high duration. Is it worth it? Or should I just take a break from power and just ride without it all winter.