Hi aaenglish,
I switched your post to a new topic to keep me from mixing them up 
As you can see from post #48 here which has the details of the Optimum lineup and in the mattress guidelines here … I don’t think very highly of the Optimum lineup in terms of quality/value and like all of the major manufacturers I would tend to avoid them completely.
Parklane on the other had has some of the best quality and value in the country which is why they were invited to become a member of this site.
There would be no doubt in my mind which one I would recommend.
Phoenix
PS: It may be a good idea to switch your username to just the part before the @ to keep email harvesters from adding you to their spam lists. If you contact me at the contact link on top of the page I’d be happy to change it for you (it can’t be changed by a user).