Radiator is really common to bust trans cooler and mix fluids may mix in one or the other or both. I usually replace radiator and flush system twice with flush machine. Damage done is hard to gauge until that point
I've got both like everyone says depends on what you want to do. I like an 80 for riding like we did at New Years. But to cruise out of area and explore mild roads/trials I'm liking this 100 only had it a couple weeks so far not overly impressed with its capability compared to an 80 but it does...