Europe or Your Rope?

So we're trying to decide on our summer trip. We hope to go to Europe - at least that was my Valentine gift idea. But, it's such a big financial decision that we've postponed ordering it for a week. On Friday we went to get our passport application sent in. We got there at 3:57 and they close at 4:00. Luckily we had a teacher in-service day, otherwise we would have had to take off school.

We're not sure if we should trust Go-today.com to give us the best deal quote, but so far they have. If anyone has had experience with that company or another, please give some advice. This is our first trip to EU and we want to have a wonderful time. So far the cities will be London 3, Paris 3, Venice 2, Florence 2, Rome 2 .