I personally find store-bought sauces to not have much flavor. I usually add my own spices to the sauce to improve it, or even some additions like sundried tomatoes or ground meat. Even better is making your own pasta sauce, I never used to but my boyfriend makes it and it's not that difficult. He starts with canned crushed tomatoes and adds lots of seasonings and spices and just simmers it for a while, you can make a large batch and freeze it.