The Giulio Cesare (1914), IMHO, is probably the best all-around EBB, and I'd reccomend that above even the Leo. It's not really that OP with 13.5", but you have multiple effective armament setups, including those, with good speed and awesome hitting power.
Caracciolo (1919) was one I felt only so-so on. It's decent, but really has very little to offer over the ships above and below it, and somehow has a BB4+ sized hit box, larger in fact than the regular Caracciolo.