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. 4 U- C# D8 U4 h; d6 u% h 9 z9 M2 X; E8 P$ M$ x: K! Mof course, this all depend on how long you plan to live in this house too.# S5 Z$ O' L& a+ e7 T2 z( w