Hey guys. Can anyone point me to a cheapest ($300-500 max) dot 75ft to 100ft cf tank with gauge for the tank pressure. Most tanks I seen only have gauge for the output and u always have to use a dead nut to find the pressure. I want a tank to show the tank pressure so I can just look at the tank to see when it needs to refill. It doesnt need to have an guage for output since I use the gun guage to tell me when it's full. But if it have two guages to show both then that would also be good too. I know great white tank from Joe have 2 gauges but they are $700 and the extra gauge is an extra cost.