Yea, my computer is my gauge but there is still always the convience of the stand alone gauge. Although its really not necessary cause you can always use your computer and regs. Anyway I only have two tanks to check so not a biggie.
As for the tank refills, I saw a note at one of the refill stations that said, "we do not fill empty tanks." I wondered "why?" Your paying for the air and they do make money from all those partially empty tanks. Annnnndddd, if you have a tank that you haven’t used for a few months then do they just add the new air to the stale air in the tank annnnndddd what if the its old dangerous air like binobanana said. humm a dilema huh. With winter setting in many of us are going to have full tanks or partially filled tanks sitting around for a few months. What are the rules here?