I bought the largest 110V machine Miller made back in about 2000 (135). I love it - however I don't build big (200+ gallon tanks) cookers so I appreciate what a larger welder can do if that's the size you're building. A second or third pass will get me by just fine when needed.
And on the eighth day God created barbecue …. because he DOES love us and he wants us to be happy.
Current smokers: Egor (trailered RF) and Easybake (tabletop pellet drive)
It really depends on what you plan on building. The smaller mig's like the 140's offer good versatility plus they tend to be much cheaper than the larger units. If you find a listing on CL, post the link here and we can give you some feedback.
I like it better than the $1800 miller that we have at the race shop. I was out of money to get a tank of gas so I used the flux core an it welded great very smooth and helped with cutting the wind while welding outdoors.
Here was one of the first welds I ever did with it and with flux core wire.
One very nice thing with the flux core wire is you can weld thicker steel with a smaller machine.
If it ain't BBQ it ain't food.
In need of more steel and time!