While I was shopping for mattresses I came across GoMattresses.com. Not only do they have a wide array of mattresses to choose from in all the names you know and love (Enso, Lady Americana, Primo International, and Simmons) but they also offer free shipping on EVERYTHING, as well as no sales tax! This, combined with their already low prices means on average I can save a lot of money vs. shopping at my local store.
Their site is well laid out and organized by the type of mattress you like (Plush, Pillow Top, Firm, Euro Top, Memory Foam, or All Mattresses if you want to see everything). They even offer bed frames and futons!
The mattress I'm interested in is Beautyrest Exceptionale Whitecliff Extra Firm Mattress by Simmons Beautyrest® which right now is an AMAZING deal! The retail is $2,179, their regular price is $1,559 (a 38% savings) but right now it's on sale for $1,299 which is 40% off retail! Plus no sales tax means I save another 8%, and free delivery (most stores in my area charge a delivery fee).
*sigh* Isn't it gorgeous! I love that it's an extra-firm mattress which for me provides the most restful sleep (although if I wanted to, I could easily add a topper to soften it up). Plus, Simmons Beautyrest is one of the premiere brands in mattresses so I know I'm buying a quality product.
Product descriptions are very detailed - here is the one for my mattress:
The Beautyrest Exceptionale Whitecliff Extra Firm Mattress by Simmons is constructed from thicker wire gauge springs, and is best suited to those who prefer a very firm and supported mattress. Beautyrest Exceptionale collection mattresses feature two story coil on coil construction; a complete layer of plush Pocketed Coil springs that provide a comfortable sleeping surface, and a bottom layer of firm Pocketed Coil springs that provide the ultimate in support. The 1960 Density Pocketed Coil Unit provides the highest level of motion separation and conform-ability that is offered by Simmons. Ultra 360 Foam Encasement features 3 inches of high density foam edge support.
GoMattresses.com also offers foundations (boxsprings) if you need them, as well as bed frames and pillows so you can take care of all your bedding needs at once!
Shipping time is very reasonable (2-4 weeks, according to their site) and comparable to my local stores.
If you're in the market for a new bed I highly recommend this site. After all, if you're spending about one-third of your life in bed, shouldn't you be comfortable??