Hi Annakatherine,
I can make a few comments about each mattress you are looking at in terms of the quality of the materials and layering but without knowing the size you are looking at or whether you are using “mattress only” prices (which is the only way to make apples to apples comparisons) I can’t speak to their relative value.
This is an all latex mattress with 8" of Talalay latex (probably blended although they do come in both 100% natural and blended versions). If you are looking at the newer versions with the blue cover then you can see the specs here. This is the firmest of their line and most people that are side sleepers would need to add a topper to this mattress although of course each person may have very different needs and preferences.
This is very similar to the Pamper except it only has 2" of Talalay latex on top (active fusion fast response) and the core is a blend of polyfoam and some latex that are compressed and bonded together like rebond (carpet underlay). This is a durable material but of course not in the same league in terms of performance as latex. this would also be firm and have a rather thin comfort layer for most side sleepers. I don’t know what the ILD or softness/firmness of the base layer may be but with only 2" of latex on top … you would feel much more of the firmness of the layer below in both the Pamper and the Balance than you would with thicker comfort layers and if the firmness of the support layer was similar to the firmness of the latex support layer in the Pamper (40 ILD) they would feel fairly similar.
This also uses latex in the top layer but they don’t provide any information about the type or thickness (or whether there are any other materials in the comfort layers) and I would certainly want to know this to make any meaningful comparisons. Their base layer is 1.8 lb polyfoam which is the minimum I would I consider to be suitable for a base layer (except for lower priced mattresses) but it’s not in the same quality range as the other two and it’s also very soft for a base layer at only 23 ILD (softer than either of the other two you are looking at). If the comfort layer is very thin then this may be necessary to provide good comfort/pressure relief for the mattress. I would imagine that this one was the softest of the three you are looking at.
If you let me know your city or zip I’d be happy to let you know or any other options I’m aware of in your area. My guess though is that post #2 here would cover most of the “lists” that are close to you.
If you are open to or considering an online purchase then post #21 here includes the members here that sell online and which are among the best quality and value in the country. There is a very wide selection there of different types of latex and latex hybrid mattresses. They can also provide a good “value” reference point for local purchases (I would consider a local purchase that was about 20% more than a very similar online mattress to be roughly “equivalent” value because of the added risk of an online purchase that you can’t test in person).
Hope that helps
Phoenix