That platinum Jubilee of 2013 (my "Best Value Pick of SIHH 2013" and one of my personal favorites) is indeed a great watch and especially rigid. That solid case back makes a big difference in the rigidity of the watch! The steel one isn't "flimsy" but not quite as rigid as that platinum one. Everyone should get a Platinum Jubilee Master Ultra Thin if they can afford it! They're quite reasonable, especially considering they're platinum!