I took it as the first device in order to learn TIG welding - after a month I began to like the result myself. The device is very good. For all the time no complaints about the work. Works in a dusty environment. There were days when he continuously cooked and cooked for hours - not a single failure. Different pros: Long torch sleeve, build quality, overall impression of the work. Cons below: The device is bulky - only post welding! Noisy, It is very inconvenient to adjust the current strength and other parameters when using the 4-stroke welding mode, because the only indicator shows several parameters and "runs" between them, lingering for a period of time less than 1 second. When the device is at your feet and the fans blow on your feet, you can get cold feet - the fans are good!