hey greenman, those are all the types i have whacked from my growlist, gulp...... hey all tomatoes are good but with so many times eventually you eliminate types as your portfolio grows, just like peppers. for years i grew black cherry and yellow pear.
there were years when black cherry and yellow pear were staples in my yard. can't believe how long i avoided sungold because of price. now, i will gladly pay $3.99 for the 20 seeds just because of their unique flavour.
and splitting is not a bad thing, it describes the natural process of an heirloom tomato to repair itself, if you hate monsanto, then you learn to reappreciate scabbing. natures natural bandaid. i too disliked scabbing until i taste tested scabbed vs hybrid. just cut around the scab, the flavour is far better than the appearance.
good growing and please investigate heirloom tomato varieties.
.....akin scabbing in tomatoes to corking in peppers.
again, good growing.