While I grow pole tomatoes too, my favorite bush tomato is the Italian Roma Tomato. I purchased the seeds from Botanical Interests. This tomato is oblong in shape and gets to be about 3 inches long. While the tomato does not have many seeds, it has more meat and a yummy flavor which is great for making salsa and spaghetti sauce.
Also, the plants are very productive and give off a lot of fruit. This year they started producing in mid July and they are still coming! I usually keep getting tomatoes into the fall.
This year I planted three Roma plants and one Glacier tomato plant. I think next year I will go with four Roma plant because they are an all around winner from our garden to the kitchen!