I have a custom Latex foam mattress from HMC
. I thought I wanted an innerspring mattress as well, but the sales rep talked me into a 7" thick foam mattress. It was less expensive and lighter. Glad I went that way. The mattress is more comfortable than the innerspring I had at home back then (2003).
However, if the wife has decided it should be an innerspring there is probably no reason look for another solution. HMC makes innerspring mattresses as well. The company has an East Coast
manufacturing facility in Ft. Lauderdale, but they used to have local reps. I dealt with the rep in Annapolis
If you have storage
bins under the berth, I recommend you have whoever makes your mattress install a hinge so you can swing the mattress out of way rather than pulling it off the berth.
Pics of my mattress: Cabin Upgrades
9 years later it is still the most comfortable mattress I've ever slept on.