I've been really impressed by the vigor of
CHOCOLATE SPRINKLES FNT HYBRID
which I bought from (of course) Tomato Growers Supply Company... It's been producing in my garden since early February (maybe January? This is why I used to keep a blog...). It's very vigorous, productive, the tomatoes seem to ripen reasonably quickly once set... And the flavor of the tomatoes is excellent, not overly sweet. And they look great mixed in with other small-bodied tomatoes. MINT JULEP has done well in my garden, too: Largish for small-bodied tomatoes, it's hard to know when to pick them. (Pick them when they come off the plant without undo tugging, then let them ripen on the countertop a few days.) Very pretty green and yellow... Good flavor, not great.