Mattress Firm gives a satisfaction guarantee for 100 days.  I am a picky shopper; any store that offers a 100 day guarantee or your money back (minus the pickup fee which is fair) gets my service every time.  I definitely used this policy to my satisfaction.  Our salesman was very patient with us as we went through a comfort exchange.  I also had to do two manufacture's defect exchanges, and both times; he was nice and curteous about it.  I highly recommend Brad from the Minnetonka MN Mattress Firm store.