Hi “L”,
I personally have no idea which online mattress would feel similar to the iComfort for me because I have no personal experience comparing them to any online memory foam mattresses. Even if I had though … my opinions of how close they may be might be very different from someone else’s experience.
Most online manufacturers use Tempurpedic as a reference point because they are so widely available and well known in the memory foam market and they are a “familiar” comparison (and part of this is marketing as well because Tempurpedic is in such a high budget range that almost any mattress compares well to them in terms of price).
While there may be others as well … the only ones of the online manufacturers or retailers that are listed here that specifically uses other manufacturers as a reference point I’m aware of is Novosbed who compare two of their mattresses to two of the mattresses in the Sealy Optimum line and Selectabed which compares two of their mattresses to two of the iComfort models.
Having said that … if you talk to a knowledgeable and experienced online manufacturer or retailer that is familiar with a mattress that you have tested and like then they may be able to give you some good guidance about which of their mattresses may be closest even though it’s not an “official” reference point that they use in their descriptions. There are also manufacturers who may prefer to use a phone conversation to “match” their mattresses to different people and don’t use comparisons with major manufacturers because there are so many ways that a mattress can compare to another one and it can be so subjective that they may prefer not to set up the expectation that a mattress will “feel” exactly the same even though it may be a close approximation in terms of comfort/pressure relief and support/alignment because “feel” is much more subjective than both of these.
This is also why I often suggest talking with an online manufacturer or retailer because they may have knowledge or information that can be very helpful even if it’s not a part of their “official description” and some of them feel it can be more “accurate” to target what they believe would be most suitable for someone based on the information they provide than targeting how close one of their mattresses may be to another one because this can set up a situation where a customer feels that how a mattress compares to their memory of another one (which can be very subjective) may become more important to that customer than how suitable a mattress may be based on what they would do best with in their long term sleeping experience.
They don’t fully disclose this since they have changed their designs this year but they have disclosed some of the information in the question and answer part of their site (see here). Based on this …
Cool Action Dual Effect Gel Memory Foam: is 3.6 lb ft3 which is just below the 4 lb guideline I normally use for medium quality/density memory foam
Cool Action Gel Memory Foam: 3.5 lb ft3 which is a little lower yet
Serta PillowSoft Foam: 1.2 lb ft3 which is low quality
The Serta Comfort foam: 1.35 lb ft3 which is low quality
Serta Support Foam: 1.30 lb ft3 which is low quality.
ComfortLast Foam Core: 1.5 lb ft3: Medium quality but a little lower than I would like to see in this budget range and could be a weak link for higher weights.
I haven’t seen any information about the density of the Evercool memory foam or the Everfeel polyfoam layers.
The Visionary Plush has the following layers …
Comfort Layers
EverCool® Memory Foam with Serta® PillowSoft™ Foam
EverFeel™ Technology
Cool Action™ Dual Effects Gel Memory Foam
Support System
Comfort Last Foam Core with Ultimate Edge Support
They don’t mention any of the layer thicknesses so you would still need to find that out and I would want to know the density of the missing Evercool and Everfeel layers but even without this I would call this a risky choice.
Phoenix