I recently got a welder which has the ability to do Flux Core or Gas Shielded. I do not own a bottle for gas yet (Expensive :-)) but the flux core wire is almost double what the solid core wire is. Another issue I have been having is burning through the 16 guage steel for the bike I am building.

What do most people on the thread use? Flux core or shielded gas? Is the cost upgrade to buy a gas bottle worth it for a hobby welder?