I would go for the 585.
This is based on my personal experiences. I just replaced my 585 (damaged) with a new 585. I could have gotten the 595 but my time on and impression of the 585 were so positive that I saw no reason and just pocketed the difference.
This is based on my personal experiences. I just replaced my 585 (damaged) with a new 585. I could have gotten the 595 but my time on and impression of the 585 were so positive that I saw no reason and just pocketed the difference.