The Frugal Choice: Camco 4-in-1
Camco is a commonly relied upon brand in RVing, so this should work fine.
Your First Upgrade: Valterra Dominator
23 mil, which is thicker walls than most. Specified for -20 to 150 degrees, so they're using good quality material too.
The Savvy Sweet Setup: Valtera 20-foot Viper
26 mil. 20 feet of hose. Stays flexible down to -30.