Mig vs flux-core. I feel that Mig is better, but flux-core is a little easier. If you want to do the investment, get a machine that can run the gas since it can run both solid wire and flux-core wire. As you would improve with your welding skills you can step to using gas without having to buy a new machine. Just whan you are running flux-core wire don't run the gas. But if you forget and so run the gas, it really is not a big deal. The Lincoln that I have has in the manual that if I run the gas with the fluc-core wire, that I can weld a thicker piece of material in a single pass.
The upside to welding with gas is that you don't have the slag to chip away after you are done. The downfall with using gas is that you have problems when you are outside on a windy day, but in return you dont have as much cleanup.
So there is my two cents worth. I just hope I didn't confuse you.
But Scott is right (
) it is just matter of preference and job specifics.
