For the best flavor, seek out juicy, homegrown or farmers' market tomatoes. This is a good starter to prepare when you have the grill going for an entrée, but you can also toast the bread under the broiler.
I thought this was just okay. It was different using ricotta cheese, which adds a different texture. I thought that there would be a stronger garlic flavor, but it was hardly there. Maybe add minced garlic to the ricotta mixture first.