they are all nice, but for me, 3,4, 5, 6,.... awe **** it, they are all really nice E!
4, 7, and 13 really stand out to me as great portraits.
I personally prefer the first half dozen for the lighting, (except for the vignetting) but you know that's how I like my lighting so..no surprise there.
overall, its an impressive set.
you should be very proud, and the client very pleased.