I took night courses at our Community College in all flavors of welding. Definitely time well spent. Now, having a choice between welding processes I seem to gravitate toward stick, but the reason is shop configuration and logistics.
My Idealarc 250 is always plugged in and the leads are easily accessible so it's just pull down the leads, click the switch and GO. I may have to turn the dial once to get an acceptable arc depending on the rod and material combination. Fastest setup option, slag removal not included.
To use the MIG (Miller 250X) machine I have to roll it out from its under-bench storage, unfurl the power cord and get it plugged into an outlet across the shop, then orient the hose and stinger - Second fastest option, some spatter to deal with. Pam spray and a needle scaler are your friends.
To use the TIG machine (a Miller 180 which sits on top of the Idealarc) I have to unfurl the leads, unwind the pedal cord, place the pedal somewhere convenient, turn on the gas, and then start fighting with the machine settings. Tied for seccond place, no slag, no spatter.
And then, another consideration: If I'm welding outside in the wind, the stick is best even with the time spent chipping slag.
Related thread:
https://www.hobby-machinist.com/threads/show-us-your-welders.16877/#post-387527