Vulcan OmniPro 220 help/thoughts?

I've been looking at buying a welder because I eventually want to make my own bed rack. I've been thinking about a Vulcan OmniPro 220 from Harbor Freight but haven't heard much about them or what they're good for. I'm not compltely new to welding. I took a welding class a few years ago in college where we learned the basics and practiced oxy/accetelyne torch, stick, mig, and tig. At work we usually do tig, but because I've only taken the one class, so I'm not usually the one doing it. However, I would still like to practice it.

1. What type of welding is best/favored among fabricators for making bed racks, rock sliders, and skid plates? (1.5" tubing)
2. Would the OmniPro work well enough on 120v or would I need 240v?
3. Where does one aquire an Argon tank, and how much does it cost?
4. Would I be better off getting a mig only or tig only type welder instead of a jack of all trades?

 

Harbor Freight is said to have a one year Money back warranty it fails or you don`t like it take it back.

I am guessing the return would be in the form of store credit just a guess.

Voltage it depends going to maybe drag this all over The state welding for friends 120vac is the way to go.

I can weld anything on these trucks and Have with my vintage 120vac Lincoln SP-125

That said you have access to 240vac don`t plan on dragging it all around go for it

This unit your looking at is dual voltage I could not find just how they did this .

For Hobby use I have to agree for the most Mig welding with hard wire and shielding gas .023 wire is the best.

Shielding Gas can be bought at your local welding distributor as for price it can be a little tricky .

Polices vary and change so often no telling what area distributors are like.

Customer owned cylinders some sell some will only lease some only swap their cylinders some take them all if the hydro test is good

Most multi process machines till you get to the industrial level and cost are a compromise .

Miller and Lincoln jumped into the market to compete with the China built units.

Then know outside of warranty Inverter based Machines are very expensive to repair

You have a year to trade it in I have Yet to hear how warranty claims are handled after that time should be interesting .

Out of warranty your drive motor or fan fails that is what I think about

Throw away and buy new for how cheap it is??