Every time I make eat Caprese, I think "It tastes so CLEAN"...That's the best way to describe it, clean and fresh...
Get yourself some yummy farm stand tomatoes and basil and spend the little extra it takes to buy GOOD fresh mozzarella - But really the Balsmic makes this dish sing...don't scrimp, get the good stuff, you will be glad you did!
I did love the prosciutto but really you don't need it - and it can over power the cheese. So if money is an issue spend it on the vinegar and leave out the meat!