Hi Craig9939,
Anatomic global is an unusual brand because even though they are owned by FXI and you would think that they would be the first to provide the information you needed about foam density … they only seem to be sporadically available. The rejuvigel line is fairly new and only came out late last year so there is not a lot of information available about it. Because they are not usually the best value available … if you are dealing with a retailer that isn’t able to find out the foam density I would tend to pass them by unless there is a particularly compelling reason not to and make a blind purchase (their memory foam would very likely be 4 lbs or above). Without this information though … you won’t be able to make any meaningful comparisons or really know its relative quality/durability and the odds are high that the price you pay will not be in the “best value” range compared to many other similar mattresses that use the same or better materials.
As you mentioned Comfort Dreams is also owned by FXI but is likely much lower quality memory foam and less of it than the Rejuvigel even though the descriptions appear similar. The only thing they do mention is that it contains 3.5 lb memory foam which is lower quality than I would be comfortable with. I would be very confident that they are not the same mattress but I also wouldn’t buy the Comfort Dreams unless they disclosed all the details of its construction.
Some of the better online memory foam sources I’m aware of are listed in post #12 here.
Some of the better options in the Dallas/Fort Worth area are listed in post #4 here. there are some good options available in the area.
Phoenix