The key to the salad is to mix the chopped tomatoes, cucumber, cantaloupe, red onion with the sherry vinegar, olive oil, herbs and spices and let sit for 5 minutes so the flavors meld. Be careful not to overdo it with the basil or red wine vinegar. These are really just small complements to the tomatoes and melon.
On a serving plate, sparingly lay out the peppery arugula or place a piece of Butter lettuce to serve as a "cup". Add the seasoned fruits and vegetables on top, drizzle with a little more olive oil, a grind of fresh black pepper and serve immediately.