What is the best compost to use on my heirloom tomatoes?

Some people believe it in only a single way, but there are many depending on your ability and space. Compost in a plastic bin or container using worms seems to be the best. You can look this up online. Using the "lasagna method" also works well. I have heard and used different forms but this is the basic principle. You need Green waste (lawn clippings, vegetable scrapes), Brown waste (leaves, finely broken wood particles) and newspaper start with newspaper on bottom, single to double ply (you can get mewpaper wet but not soaking wet), then add brown waste, then green waste, then newspaper, then brown waste, then green waste, and keep repeating based on the space available. 5 layers should be fine depending on height of layers (I would end with green waste as top layer). If in container drill holes for air flow on all sides of container not on top. This will keep moisture in (rain out) but not allow it to become a soup and also allow for good air flow. Let sit for a few weeks not in direct sunlight and then check on it, may need to fluff a little and then let sit again for a few weeks and keep repeating until it is at desired compost level for your application. If it is in open air outside, no direct sun, follow same method but now check on it about every month until desired compost level. Remember to keep compost moist but not saturated and turn/fluff it to add air flow. This will increase rate. You will know it is working when you can feel the heat it is generating. Pretty amazing process. Hope this helps.