And that's where we are too, David. I have beentrying out many, many varieties and have settled on about four 'must grow.' I will still try new varieties but not as many each year.
For us, Stump of the World is hard to get a tomato that doesn't crack but it is such a good tasting tomato to us, we will always grow that one. This year I actually remembered to bag blossoms of our heirlooms to save seeds!