if you're planning to spend $ on the carpet (surface layer), then you should plan to spend $$ on the under layer. a good under layer will let your carpet last a lot longer. when you walk on carpet with good under layer, you'll feel a lot more comfortable too. # z [( e2 K# g$ P4 X0 x0 A3 \ , m6 F2 P& H: a. s4 Wof course, this all depend on how long you plan to live in this house too.1 c( c% O1 N. @7 X+ N5 D) }, X* t