I didn't know anything about inverters until I got to run a Dynasty side by side with a Syncrowave at Miller's testing facility in north west Chicago. One of Miller's techs spent 3 or 4 hours with me explaining the differences, and showing me how to weld with the Dynasty. When I got home I ordered a Dynasty 300! I've had it 7 or 8 years, not one ounce of trouble. Couple years ago I bought the PowerArc 200 from Mark, again not one ounce of trouble. About a year ago I bought the Lincoln V350-Pro, had trouble right out of the box. Loose wire inside. Most likely from being handled to rough in shipping. Question is, will these inverters last as long as transformers or generators, we'll have to wait and see. I for one am totally impressed with how much control these inverters have over the puddle! As impressive as my Dynasty is, I'm more impressed with the V350-Pro. That just might be because it has so many more options tho. Only way you'll be able to tell the difference is to get your hands on an inverter, I think you'll be impressed too!