Hey there! Roma, San Marzano, and heirloom tomatoes sound like great choices for my tomato soup. I can't wait to give them a try and add that delicious flavor and texture to my soup. Your advice is greatly appreciated!you'll want to use tomatoes that are flavorful and have a good balance of sweetness and acidity. Varieties like Roma, San Marzano, or heirloom tomatoes are often preferred for their rich flavor and meaty texture.