I sailed the Enchantment in May in an owner's suite (#8504). It was quite nice and roomy. Very private with a decent size balcony. If you are looking for privacy and the feeling of a "little appartment" away from the crowds you will like it. The entertainment system was great but we didn't bring cd's so we didn't use it much. Balcony is good size but not sunny enough to use for sun bathing. The service attendance is was okay but should have been above average (it wasn't). The last night was a bit of a drag since our suite was just below the teen lounge and they must have had a going away party. The bass sounds kept us awake. I am giving perhaps a more negative view than intended but honestly we had a great time. I will always book an owner's suite or penthouse and perhaps as time goes on one becomes more critical. If this is your first "executive" suite cruise, you will most likely be impressed.
By the way the Royal suite is not much better although it does have a grand piano and separate bedroom. I hope the comments have been helpfull. Have a great time.