Honestly, it's a toss up.
What a miserable endeavor. You're a savvy consumer in search of a good night's sleep. They are holdouts of an era when product reviews and shopping around and other seemingly accepted consumer habits were the exception rather than the rule.
Today, retailers like Sleepy's, Mattress King and 1-800-Mattress have preserved in amber a way of doing business that would be quaint if it weren't so maddening.
Poorly trained sales staff, scant product information at point of purchase and innuendos of pricing wiggle room were all part of my experience.
In fact, sorting through product differences across retailers and even within brands is so impenetrable that Consumer Reports has refused to report on the category. And they're in the business of demystifying consumer products!
I won't bore you with any more details of my experience but instead offer advice: Go for comfort above savings, don't drag it out any longer than 2 or 3 retailers, and compare return policies.
Image: The CEO of 1-800-Mattress, NY Daily News