I wasn't fond of the tomato soup either, but if you throw in a couple tsp of tomato paste it will brighten the flavor some. If you can get the Walden Farms stuff, try some of the tomato and basil sauce too. Boil up your vegees too and puree them, and that will help flavor the soup (don't add that until the vegees are done). Add some italian spices, green pepper...whatever it takes!
If you have any other soups, sometimes they are better if combined, then save a portion for another meal. The leek was too oniony for me by itself, but when I combined it with chicken soup, it was pretty good. Also, I always diluted the soups so I got a bigger bowl and a thinner consistency.
Also, there are recipes you can make that use the soups, so you aren't just eating a bowl of soup. I think I tried a zuchini pancake sort of thing with the leek soup and it was pretty good. So you might do a search for the threads that have IP packet recipes in them.
Good luck!