Hi vj321,
Welcome to the Mattress Forum! 
Hopefully you’ve had the chance to read the mattress shopping tutorial which has all the basic information, steps, and guidelines that can help you make the best possible choices … and know how and why to avoid the worst ones.
Mattress reviews (either positive or negative) that are written by people that don’t have a great deal of knowledge or experience about mattresses and materials can be among the worst ways to assess the quality or value of a mattress (see post #13 here) and I would be very cautious about how much you rely on them. You can see my comments about the change (which was long ago) and the particular review you are probably referring to in post #2 here and the posts it links to.
If you are considering this mattress I would also consider ordering it from the Dreamfoam website instead of Amazon because they have a 45 day comfort guarantee and they are also offering a 10% discount at the moment (see their facebook page here).
The better options and possibilities I’m aware of in the Edmonton area (subject to following the steps and guidelines in the tutorial post) are listed in post #136 here.
Post #21 here also includes a list of some of the better online manufacturers and retailers I’m aware of that ship across Canada.
Phoenix