Hi james,
Before you consider an icomfort I would read this article.
Post #11 here also talks about the quality of the materials in the iComfort line and why none of them are great value.
There are many similar or better quality mattresses that have better value than the iComfort and the best source of these is usually a local factory direct manufacturer or a better sleep shop which carries mattresses made by higher quality local or independent manufacturers.
If you let me know the city or zip you live I’d be happy to let you know of the better options that I know of in your area.
Phoenix