Thank you for the feedback - I have decided to go with an AGM cranking/dual purpose battery at this point (Memorial Day sale thru O-Reilly Auto Parts) as the current Lead Acid battery is 4 years old (still functioning but coming to the end of its life cycle) - the current charger is working fine (just won't charge different style batteries at the same time) but I do see the value in eventually getting a new/updated charger (the NOCO chargers look nice) that will have the ability to charge a variety of battery styles - and maybe when the AGM's come to the end of their usable life cycle I might take the next step (but this will be 4/5+ years down the road) - thank you again for the feedback and information !