Which do you think is more import when buying a portable "machine A" has 2 3stage vac mtrs 500psi pump and really good internal heater no auto pump out or auto fill and only 9gal recovery tank not good with any more than 25ft of suction hose and 1.5 vac hose connector.. "Machine B" has two 3stage vac motors way better vac mtrs can run 75ft of suction hose no problem 500 psi pump, 15gal recovery and fresh water tank auto dump/pump out and fill but no internal heater 2.0inch vac hose connector, source of hot water would be using hot tap water since no heater-- i would assume machine B would be able to do better job what do you all think