Not a doubt in my mind. I have been wearing the 5320 as a daily watch for over two years and I like it more today than I did when I bought it ( new) from an AD in Beverly Hills. I paid full retail for the watch and have not regretted that decision. As a Patek Philippe enthusiast, I enjoy wearing my watches. The 5320 fits perfectly into my daily life.
The 5140 is a 3940 “Scaled-Up” to accommodate modern fashion sensibilities and I feel that the design suffers. It just does not work for me. Better off to get a 3940 (if you are leaning in that direction). The 3940 is an all-time GREAT watch.
You are dealing with a quality problem. Congratulations!