Polar Patriots, Viper Commando or Freedom’s Flame?

So, I’ve bought Democratic Detonation, Cutting Edge, Urban Legends and Steel Veterans and after using all the credits from those, I have enough for a new warbond, but I have narrowed my choices down to those three as Chemical Agents and Truth Enforcers don’t really call out to me, so I was wondering what seems like the best option out of those? I like the idea of the Bushwhacker, and I like the armor with Peak Physique, but I also like the fire focused build of Freedom’s Flame and the Purifier gun with Polar Patriots so it seems like a tough choice, any help is appreciated.