Formerly... I believed the wally-world class 12V boat battery was good.
They would last 2~3~4 years in my systems.
Now... I believe the 6V 220AH-class golf cart battery is much better (even if it is the "sam's" battery, which for a while was made on the Trojan T-105 production line, with the same parts).
'Sam's 6V 220-ish-AH golf cart batteries' I installed more than 10 years ago are still running fine (I expect their capacity is lower, but they are not 'drawing' the rest of the batteries down).
I would rather have 2 series 220AH 6V golf cart batteries than 2 parallel 110AH 12V batteries. That is what DanG implied, I think.
Myself, I'd make a day of it, drive the 200 miles, stop to see that stuff you never stop to see, eat at that place you always wanted to, etc.
G-