I wanted to stick with a USA made product. At one point I was considering the HF 170, but heard there are no parts available and made in China.
So I recently purchased the Hobart Handler. I have my Argon CO2 bottle, and need to start practicing.
I may just buy a HF Flux Core welder to practice with flux wire, the damn thing is only about $80 on sale.
There is no reason you can't run flux core in your Hobart. Flip the drive roll to the correct size,install the correct size tip, and reverse the polarity to the gun at the terminals right above the drive roll block.