Refurbished means they were returned products--somebody bought them at the store, and returned them. In turn, the store sent them back to the manufacturer, because they aren't allowed to resell opened products as new, and few stores will reserve shelf space for open-box items.
It won't look pristine sure but if it were severely cosmetically damaged the manufacturer would not be sending them out to resellers.
The Promedia 2.1s are better than the Z-2300s but the metal horn tweeters are a little bright IMO. The Z-Cinema uses traditional soft domes.