my company uses a lot of processing gases like HE, O2, and nitrogen with our lasers and TIG and MIG welding. A lot. we just sent Praxair packing after 17 years and made the switch to Airgas. all tanks, hard ware and plumbing completed a month ago and all systems are a go. not just based on my company's move, but based on conversations with Airgas personnel, led me to invest some of my own $ with Airgas. i liked what i heard and what i saw. just love investing in companies that i am a customer of. for instance, i make more in dividends than i pay in monthly bills from the utility company. More in BP dividends than i pay $ for at the pump. More in dividends than i pay for groceries. all in all, i make more in dividends than i spend period. a good way to live.