Many years ago, while living on a mooring
and spending much time away from any shore power
I was using a batt bank(s) consisting of 2 Trojan J-305s and 2 Rolls J-305s.
The Trojans gave 9 years of service
, the Rolls gave ~10.
Both brands were showing signs of needing replacement for ~the last year or so of use.
The Rolls had a "small" amount of capacity over the Trojans, but at a substantial higher cost.
Since the case sizes were the same the "extra" came from plates that were a little taller within the case(s).
The upshot? The Rolls sacrificed space above the plates for "Top Water", as a result they were more dependent upon religious monitoring of water
So, after living with both brands side-by-side for those years my conclusion was that the Rolls were not worth the added expense and more fussing with the water
to warrant the small capacity increase.
As always YMMV.