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. : s3 o' P" a9 z5 l$ b* w 6 X6 H$ m: u- \2 D3 M! l+ gof course, this all depend on how long you plan to live in this house too.0 k, `6 l5 W$ m2 J j. } t7 q