I have an optrel/uvex satellite. If you're doing mig the auto darkening will serve you well. It's a bit overkill for tig. On mine, the features i like most are interchangeable clear lenses over the shade, in case of scratches or spatter. Also, make sure it has photovoltaic (solar panel) cells on the front and doesn't rely on non-rechargeable batteries. Another thing to loom at is respnse time. It's not a guarantee, but usually the cheap models will be slower. Another handy feature is the shade adjustment knob on the outside. Its nice to be able to reach up and adjust it on the go. Mine has a few other fancy features but they never get used, tbh.