BF... I do plan on spending a lot of time on her dockside, in between weekend trips, probably several days a week, so maybe AGM would be the way to go.
I think you misunderstood me...AGM's are NOT cost effective for mostly dockside use. The only other reason for YOU to get AGM's is because they are sealed requiring no maintenance or if you need to install them on their sides for space reasons.
Denise...if you like, suggest you start a separate thread so we can keep our answers specific and not hijack BF's thread. "Group" is simply the physical size of the batteries like a width of a shoe being A,B,C,D or Sailing Dogs pants being extra-large!! (g)