Pros: Cost, able to load into the back of a car, comfort, no springs, hypoallergenic.
Cons: Heavy, heavy, heavy. Heavy.
My husband and I bought the king sized NovaForm elite mattress by Sleep Innovations at Costco about 8 months ago. We wanted a king size bed because our queen seemed too small for us (he's 6'1" and I'm 5'6", average weight, but we both like to sprawl out when we sleep). While we were shopping around for a conventional king mattress, we started to become enamored of the foam mattresses. Costco's price pretty much blew away the competitors. At $700, it came down to price and ease of transporting home. There was no way we'd be able to transport a conventional king mattress without hiring a delivery service or getting a truck. The novaform mattress is compressed into a box about the size of a washing machine. It is HEAVY!!! The decompression took about 3 days, but I'd say it didn't achieve its full expansion for about 2 weeks...like another reviewer mentioned there was a ridge down the middle for quite awhile, but it's not hard or real noticeable.
We sleep GREAT!!!! I love the way the foam cradles me. No achy pressure points. Just snuggle down and fall asleep. I don't feel any jostling from my husband when he gets in and out of bed or when he turns over. I'm no longer rolling towards my husband because he's heavier. The old bed used to sink a little more toward his side causing me to roll toward the center. In fact, I think if we had had a queen foam mattress we wouldn't have needed to upsize because the foam doesn't sink in the same way as a conventional mattress. Keep this in mind because King size bedding is expensive!
The Platform Bed issue--We wanted one, so we thought this would be great. We got a platform bed, but it's the kind that has a padded rail that surrounds the mattress like an upholstered, padded bedskirt. Very attractive, but it makes it REALLY hard to change the sheets. A foam mattress is very floppy and heavy; whereas a conventional mattress has a little more rigidity. Getting the fitted sheets tucked under the mattress is backbreaking work. It takes me forever to get the sheet smooth unless I have my husband around to help. So keep in mind the platform bed should allow the mattress to be exposed on at least three sides.
Moving issue--I don't know how we will move this. We will need a giant vaccuum sealer or something. It's so unwieldy in it's expanded state that I dread the thought of moving...which we will have to do in 5 years. As it is, I have not vacuumed under the bed in 8 months. We are about to repaint the bedroom and remove the textured ceiling and I am not looking forward to moving the bed.