You will find literally hundreds of recommendations over on the Growing Tomatoes forum here.

Personally, given the size you indicate (most slicers are larger), it is hard to beat Rutgers. You might consider Arkansas Traveler or Bradley as plants are usually available for both of those.

If you had time to grow from seed there are hundreds of possibilities.

Dave

You know, I bet I have bigger problems with cracking than you do, Obrionusa -- arid climate, porous soil, sprinklers.

For an heirloom choice, Thessaloniki handles the conditions very well.

I have Big Beef in the garden every year for the last decade. Another hybrid slicer that does great is Goliath.

digitSteve

Big Beef and Brandy Boy would be hard to beat for all around good taste for slicers. I think Rose de Berne is hard to be for pure taste, but after the first fruit set the quanity and quality drops off.

Keep in mind that cracking isn't a variety issue, any variety can have cracking problems. Cracking is a moisture control issue and is easy to resolve simply by picking at blush or color break and letting them finish ripening inside.

All the other advantages of color break picking are also discussed in more detail over on the Tomato forum.

Dave

I picked up some jet star and supersonic today. I will give them a try. I will probably always favor the rutgers.
I bought some mountain fresh seeds, I only have one survived and planted a few more seeds. I made salsa one time, ran out of tomatoes and bought some from the market. She said they were mountain fresh. I really liked the flavor.