Good Day! I'm looking for first hand experience with these two boats (you don't have to own either). I have completed searches both on this forum and internet search engines and I haven't had much luck. I am currently in the market for a used Grady 258 or 270. I have found several that are within my price bracket. Since these are both narrow beam boats. does the added length of the 270 provide anything besides a stand up head and additional operational costs over the 258? Please be specific in your replies. Thank you!