The major problem you had with your Sleep Number, is the memory foam they use...and the topper you bought was likely memory foam also, if you bought it from a store. (as opposed to On-Line).
Simmons uses memory foam too, which is why we recommend a latex topper to go with a Beautyrest mattress. Besides making the surface really comfy, it prevents the mattress from wearing prematurely.
You'll notice on my website, that we do not offer "Plush" Beautyrest mattresses. The reason is that the gauge of wire used for their plush models, is much thinner than in their firm models.
Their plush and pillowtop models is the major source of all their bad reviews.
Hotels will usually opt for low end Beautyrests. The rooms aren't filled everyday, (3-4 times a week on average), and they replace them every few years.
At home, the mattress will be used every night and I would think that that you'd expect to get a lot more than just a few years from your investment.
The way to go about doing that, is by starting out with a stronger mattress...specifically, the Simmons Beautyrest World Santorini in luxury firm...shown here:
Beautyrest Recharge World Class Mattress is known for providing both comfort and support. Contact The Mattress Expert to order yours today! 856-874-6894
And add to that, an Ever-Eden 2" Soft Talalay Latex Topper...shown here:
Ever-Eden …100% Pure, All Natural Latex Mattress Toppers…(No Fillers, No Chemicals, No Synthetics)
Together, they give you all the support and comfort you could want...and last a good ten years in the bargain.
Delivery is free and there's no sales tax.
Factory Direct to You....All Items Made Factory Fresh to Fill Your Order
Free Delivery Nationwide....US & Canada...NO SALES TAX.