Purchasing CO2 in the Bay Area

[WinterWarlock]

Finally getting a kegging system together and I'm curious what y'all recommend for sourcing CO2 in the Bay Area. Would I be better off going to Airgas/welding supply or simply hitting up the LHBS? Seems like the welding supply places might be a better deal. Any input is greatly appreciated. Also, is there any point in purchasing a brand new CO2 tank if a place like Airgas does exchanges rather than fills? Thanks, HBT!

 

[passedpawn]

SF Bay? Lots of bays out there (I live in the bay area too, but not SF).

 

[WinterWarlock]

SF Bay Area.