If you’re only ever going to be welding in the shed and could be pumping out meters of weld in a day, then MIG is your best option.
If you’re only welding a little bracket here and there or could be welding outside, then a stick will be a better choice.
MIG is the easiest to use once setup correctly. Gas MIG is the neatest, just need to be careful to get enough amps into your welds. Often inexperienced people can get a nice looking MIG weld, but it has no penetration and can break easily.
Personally I don’t like gasless, I’d rather use stick.
As said previously a nice AC/DC inverter stick will give you the most flexibility for the lowest investment. Use the stick for your every day stuff, then connect the torch and gas to TIG really thin stuff or to get your pretty welds happening.
I have all 3 (MIG/TIG/Stick).
I grab the MIG for 90% of the clean jobs in the shed.
I use the stick for welding most galvanized steel and old rusty/painted bits of metal. And always use the stick outside, doing fencing etc.
I honestly can’t remember the last time I connected the TIG. Many years ago I used it for literarily kilometers of 6 inch stainless pipe and 100s of stainless chutes, but the torch and gauge are currently buried in the bottom of tool chest. I actually have some little alloy welding jobs to do soon, might need a refresher course to remember how to use it again...
