Inquire about the spring system when purchasing a sofa.  

The fabric on any piece you're going to buy should be well aligned.

Only purchase comfortable furniture if it will be used frequently. 

Look in your junk mail. You might accidentally throw out a few furniture circulars.  

Think about online shopping for furniture.

Make sure you think about the condition of furniture if offered from a friend. 

It's best to find a salesperson who is knowledgeable about springing systems.

What To Look For When Buying Furniture