Hi Roy -- Shutter speed for water is a personal thing and you will get a widely divergent set of opinions! Nailing the detail through correct shutterspeed, exposure and processing can make the longer exposures really sing. Simply going faster isn't always the correct answer, it can make the water texture more disjointed and choppy. Some of these still have some highlights that are on the verge of clipping. I thought your first set had more of a feeling of flow. Working with local adjustments to bring out the micro details and contrast will help you make the best version of the interpretation that speaks to you.