[KayJay]

Call me lazy, but I've become a big fan of making tomato puree without removing skins or seeds. I just coarsely chop the tomatoes, cook them in a sauce pan with or without spices/oil/other veggies, use my immersion blender to puree, and then freeze the puree in containers. You can then use it in chili, soup, spaghetti sauce, etc.