thanks in advance!
I can speak to the Hugo Boss sharp fit, but otherwise only have experience with BB extra slim fit. My standard size is 15.5/34, 38 or 40r depending on the brand, with a 31 inch waist. With that being said, the sharp fit shirts fit me about as perfectly as I would like, with the understanding that it's off the rack. Hugo Boss slim fit was a little too tight in the chest area, because of my shoulder width, but you may also want to try that, in addition to the sharp fit.
Hope that helps a bit.