Hi jc118,
They may not be familiar with who you are based on your mattress forum name but if you call them (and reach them) and let them know you are the one in the forum I told Matt about yesterday then they will make sure that your order is tracked down (although this should be happening for everyone that was in similar circumstances). It would surprise me if your delivery issue wasn’t dealt with quickly.
Post #12 here has a list of some the better online memory foam retailers and manufacturers I’m aware of and many of these also carry memory foam mattresses that use Tempurpedic (or in some cases some of the other major brands) as a comparative reference point. There is also somewhat of an “art and science” behind matching one mattress to another to the degree possible. Post #9 here also has more about the different ways that two mattresses can “match” each other.
Phoenix
NOTE ADDED: Because of ongoing customer service issues and delays Select Foam’s membership has been terminated and I would read the warning here before considering them.