I have a new 3/4hp Schaefer submersible pump down my well. The electrician recommended a Pump Saver Plus 111-INSIDER-P. The pump saver is manufactured by SymCom. http://www.clrwtr.com/PDF/SymCom/SymCom-111-Insider-P.pdf Is there a true cost benefit to installing a Pump Saver? Doesn't the pump already have some safety features already built in? Thank you in advance for any help.