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. P$ C0 m( t# ^9 U- { + ^7 h( Z- g5 E* Q+ ]4 a5 gof course, this all depend on how long you plan to live in this house too.7 N. x- N9 K7 `+ i- U2 z# {5 c; M: h