Beyond if you want to try something different as you have been on Reflection several times and her sister ships. But no question, choose Reflection if you want a traditional balcony as others have stated vs the IV. Beyond does have the Aqua Sky Suite for probably a lot more money, or maybe a regular sky suite. Maybe worth it to be in the Retreat for such a long cruise! If you choose Beyond in a regular cabin you can see if you can get a Sunset Veranda which has a real traditional balcony. They are aft at the very back of the ship if you look at deck plans. Maybe less expensive than Aqua class.