Hi rktrump,
They are very much an apples to oranges comparison and are very different mattresses. The Ultimate Dreams is a latex hybrid with a polyfoam quilting layer and support core and a blended Talalay comfort layer. The Sultan Edsel is a single layer that is all Dunlop latex with a wool quilted cover.
The Edsele has only one firmness choice and it will either “work” or it won’t based on your testing for PPP (Posture and alignment, Pressure relief, and Personal preferences). For many adults it may need a topper to add a softer comfort layer but this will depend on body type, sleeping positions, and individual perceptions and preferences but for children it would likely be fine as it is. The Ultimate Dreams has several comfort options so it can be customized for each person’s preference and isn’t likely to need a topper if you make a suitable comfort choice and it can be chosen in a firmness level (@ medium firm) that is suitable for children. It is also less costly but has less latex.
Both use good quality materials and are good value but the choice between them would be based on material preference, budget, on the importance of having all latex vs a latex/polyfoam hybrid, and on which parts of each person’s (or parent’s) personal value equation are most important to them.
Phoenix