I don't have a very educated or experienced palate for tomatoes but for what it is worth, my comments follow.
From left to right - top row
Lemon Drop - these tiny yellow tomatoes are almost translucent and are super sweet. It is early and productive but cracks easily. Great for eating right in the garden.
Chadwick Cherry - seems like a standard cherry tomato to me. Fairly large, red - nothing more to say for now.
Gajo de Melon - this cherry has a fruity, melon-y taste I like but it also has a really thick skin I don't care for. On the other hand, the thick skin may help it resist cracking.
Nell's Green - a Project Grow introduction that didn't sell very well at the plant sale. That's a shame because I really like it! It has a bright, fruity taste similar to other green tomatoes like 'Aunt Ruby's German Green' but is earlier and seems easier to grow.
Second Row, left to right
Green Gage - I'm not crazy about this tomato. The texture seems mealy or mushy to me.
Cherokee Chocolate - is certainly striking looking and tasted...well...like a tomato is supposed to taste. This is not faint praise because I find some of the more popular heirlooms, like 'Kellogg's Breakfast' kind of bland.
Black Zebra - this is one of the prettiest tomatoes I've seen. It has the same dark orange-brown coloring as Cherokee Chocolate but with dark green stripes. The flavor of black tomatoes is usually described as "complex" or "smoky" or "winey". I would say this had more of a black tomato (different) taste than Cherokee Chocolate, but I didn't taste them side by side.
All for now but more varieties coming!