I have grown 
Marcellino cherry tomatoes for the past three years for their crisp, tangy flavor, but each year they seemed to become more prone to splitting.  This year I decided to give another variety a shot and switched to 
 Cupid, which is actually a grape tomato, but still a nice little bite-sized treat.
The packet of Cupid seeds cost $3.95, the same as Marcellino.  When I went to sow them, I was shocked that there were only 10 seeds in the packet since Marcellino ships with 30 seeds!  Each of the little Cupid seeds cost .39!  That's kind of pricey for a seed in my experience, but Park's proclamation of them being, "Simply the best grape!" gave me hope that they would be worth the extra cost.
I sowed the seeds indoors in February, set out transplants in mid-May, and we started harvesting tomatoes in late June, a little earlier than we ever harvested Marcellino.

We have had a very rainy Summer, which generally leads to cracked tomatoes that rot on the vine.  Despite all the rain, I have not found one cracked, split or otherwise damaged tomato on any of the six plants.

The one complaint I have about the Cupid is that they seem to be particularly susceptible to blight.  Most of the plants have been stripped 3/4 the way up their stem of all leaves due to infection.  I spray them with fungicide every Saturday, but still, the blight keeps coming.

If you are fed up with splitting cherry tomatoes, give Cupid a try next season!