Hi anxious,
Congratulations on your new mattress 
I think you made a good quality/value choice and with their great return policy there is little risk in trying it.
I would be very cautious about using mattress reviews (either positive or negative) as a reliable source of mattress research or information anyway and in many cases they can be much more misleading than helpful (see post #13 here).
I’m looking forward to any comments or feedback you have the chance to share once you’ve received it and have had the chance to sleep on it for a bit.
NOTE ADDED JAN, 2016: They have now introduced their new simplified choice mattress which has replaced their previous models and have also become a member of this site.
Phoenix