I'm usually extremely skeptical about any supermarket that comes already encased in plastic, but recently I've been turned on to Campari tomatoes, carried at my local Stop and Shop (I'm in Massachusetts).
They're usually nestled in among the expensive, but tasteless, hothouse tomatoes and they come in a clear, plastic hinged container. Small in size -- somewhere between a cherry tomato and a roma -- they are, without a doubt, the most genuinely tomatoey tomato I've ever had that didn't come right out of a garden, and in the middle of the most hellish New England winter in years, that's saying something!!
They come from Mexico and there's a link to www.sunsetproduce.com on the container. $3.49 for 1.1 pounds -- so not cheap, but if you think you just can't last another day without tasting something that reminds you of a season without six foot high snowbanks,, then they're worth it in my book!!
I just made a tomato and Hellman's sandwich on sourdough bread with a little kosher salt and a generous grind of black pepper, and I will admit I was almost brought to tears at the first bite!!
Seek them out and try them -- let me know what you think!