hypetherm(spelling??) has a great variance in a product line.They carry three models I think that have built in compressors and filters.If you want to buy one for all purposes that we will ever use is the model 600. They're not cheap(2200.00cdn)but to me are the best. Have sold about 15 of them in the last 2years and have not had a problem with one of them. Consumables are very reasonable. Cheers!!