Scripps news service story published an article in late August listing the top 10 things worth paying extra for.  Here's the full list:
1.  A mattress
2. A refrigerator
3.  Running shoes
4.  Quality, healthy food
5.  Medical expenses
6.  An accountant
7.  Mental health
8. Quality furniture *
9.  Hybrid car
10.  Durable pans and knives
*Cheap furniture is best avoided whenever possible.  Whether you're talking kitchen table or couch, getting one that lasts and makes you comfortable means spending a little more.