So many tomatoes, so little space

What is a gardener to do? I know I only have room for roughly 10-12 tomato plants. I have some seeds from last year, but I know I would like to purchase a few new varieties.

What will yield the most yet taste the best? I've heard the coveted Brandywine tomato will set only one or two fruits in a season. If I had more space, I would give up one of my precious spots. I don't see that happening this year. So what else? Celebrity? Beefsteak? What about plum tomatoes for tomato sauce?

1 cherry tomato
2-3 heirloom
3-4 main crop
3-4 plum/paste

What I have on hand:

Husky Gold
Super Sweet 100s
Sweet Cluster

What would I like to buy:

From John Scheepers

#4285 San Marzano 2 Plum Tomatoes: 80-90 days
Originating in the volcanic fields near Mount Vesuvius, this acclaimed variety comes to us from the foremost Italian seed house. Known as the best cooking tomato in the world, we can not sing its praises loudly enough. San Marsano 2 is disease-resistant and grows in bunches of five to six, large fruits on indeterminate vines, ripening to a brilliant red with lustrous green shoulders. Producing over a long period of time, the crack-resistant fruit holds well on the vine. San Marzano 2 has a wonderful, delicate taste and a solid, meaty texture and is easy to use in the kitchen. It has an elongated, plum-shape, only two, small seed pockets that are easily scooped out and an easy-to-peel skin. San Marzano 2’s high sugar content helps create its big tomato taste and rich consistency. You had better plant loads since you will want to make vats of herbed tomato sauce for coveted use throughout the year. It is the only plum tomato that great Italian chefs use in their prized recipes. It will soon be your exclusive choice too. (VF) (OP.)

From The Cook's Garden

Tomato Matina (pictured above, from Cook's Garden)
Our Best Selling Tomato
Medium size German heirloom with great flavor

Heirloom. This tried-and-true heirloom from Germany is one of the few early fruiting kinds that has the kind of flavor normally associated with beefsteak tomatoes. Huge plants, with abundant potato-leaf foliage that is resistant to diseases like Early Blight and protects the fruits from sunscald. The globular red, quarter pound fruits are borne in large clusters and free from the green shoulders often seen on others of this type, such as the Czech heirloom Stupice. Indeterminate.

I have yet to receive Johnny's seed catalog, so I'm sure my final decisions will be modified.