Pachyderm,
As I understand, much of the missing substantive info needed for people to make choices will not be on the site until October 1 because negotiations and decisions are still being made by the insurance companies, the states and the federal regulators.

I would expect even after October 1, we will see many more changes as the system must be flexible as new issues/problem appear.

Word of caution: do not try to go through the entire process on October 1. Look at the website once or twice then formulate your questions. It may be quite awhile before someone will answer your questions. But while you are talking with them, also ask if they could recommend a plan for your needs. While they probably cannot actually recommend they are likely able to help narrow your choice and then highlight the difference between plans you are left considering. The people hired by the exchanges to help you have had very little training. Evaluate the program you are interested in based upon all the info you obtained. I would then recommend calling an exchange employee back reciting your reasons and making sure all the questions you asked before are still answered the same way.