Hi nicoleak,
The first place I would start your research is the tutorial post here and in your case the optional step 6 which includes a link to the members here that sell latex mattresses online that include a wide range of options, designs, materials, and prices. I wouldn’t hesitate to buy from any of them if they were a good match for the parts of your personal value equation that were most important to you (types of latex and mattress designs they have available, options available to customize a mattress both before and after a purchase, return or exchange policies, price, etc).
There is more about the different types and blends of latex in this article and post #6 here. Which type of latex you choose is really a matter of personal preference and your budget and not so much a “better /worse” choice (all the latex you will encounter would be a good quality material).
The better options or possibilities I’m aware of in the Fairbanks area are listed in post #2 here.
The best source of guidance and information about which mattress would be best for you would always be a more detailed phone conversation with the online retailer or manufacturer themselves who will know more about their own mattresses and be in the best position to give you good guidance about which of the options they have available would have the best chance of being the best match for you in terms of PPP (see mattress firmness/comfort levels in post #2 here).
Phoenix