Hi everyone...I have a 26 year old 3.5 Ton Whirlpool unit and i'm interested in replacing it with a more efficient unit.I just had a new 4 Ton Ruud Air Handler installed in December and was leaning toward a Ruud 14 SEER condenser unit..I was also looking at Amana,Trane/American Standard..My inside unit is model#UBHC21J18SHG What kind of quality are the Ruud 14 SEER? Matt