Not sure if the spelling is right. To start, I'm looking to replace the fact speakers w/ better stuff. A well respected local audio store who deals with some high end stuff, suggested I install Eclipse 5.25's ( $70 ) and 4x10 coaxials ( $100 ). Sensitivity is 90 db's and they say that they are not power hogs and should work very well w/ the factory HU. Do these speakers rank up there, or should I pass and keep looking? Also, being how the 5.25's are coaxial, should I disconnect ( unplug ) the dash mounted 3.5's for fear of over taxing the factory HU? My GN has the CS II. Thanks Brian