I was on the Oasis last January and it was the finest ship I've ever been on...the destinations weren't the best, but the ship was.
I don't know if I will sail the Allure or not, but may give it a try.....What a nice ride....
There are some visual differences that you can spot at a glance. For one, the front set of life boats on the Oasis are 5 together, then a space and the last on. The Allure are grouped 4 and 2. Also, the high rise section in the Aqua Theatre is dark/black on the Oasis and is white on the Allure. You can tell which one is the Oasis by looking at the water line too. The Oasis is off on a cruise fully loaded and sitting lower in the water while the Allure just has crew and not all the plants and other items yet. But, who's paying attention to that trivial stuff, that is a gorgeous picture of what 2 Billion+ dollars looks like floating!! We can't wait to go on one of them if they will ever come down on the price premium.
1992 MV Royal Majesty
1993 MV Royal Majesty
1996 Sun Princess
2007 Liberty of the Seas
2010 Navigator of the Seas
2010 Radiance of the Seas