Ohhhh mannn

i was using top gas from saph. I found a retailer that sells them for like 5 bucks a can, over here is like 20 bucks for now

This is my first time running gbbr, is there much of a performance difference between top gas/ green gas and propane? i know propane smells like fart, other than that will it affect the guns part in any way?
Thanks for all the replies, appreciate it.