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. " r! Y# J, S$ n& B; B( j . C) d6 p" z/ O, j' Z' y/ wof course, this all depend on how long you plan to live in this house too.3 X7 l5 Q. v/ G2 M4 X* ?, f