Hi Plafker,
Welcome … and I’m glad you found us as well 
Which of their mattresses may be best for you would depend on several factors (your weight and sleeping positions for example) and can vary from person to person but when you can’t test a mattress in person then the most effective approach would be a more detailed conversation with a knowledgeable online manufacturer or retailer who can help “talk you through” which of their options would be the best possible choice (see mattress firmness/comfort levels in post #2 here). They will have more knowledge and experience with matching their mattresses to different types of people based on “averages” than anyone else.
As you know I think highly of SleepEZ and you are certainly looking in a good direction.
Phoenix