It's wonderful to hear your trip turned out so well that you would love to come back and do it again. We were very glad to help and offer suggestions, it makes us happy to learn afterward that the vacation went really well, that you enjoyed it and had fun 
Your suggestion of the GPS for when you're moving around Tuscany is definitely a good one - since we also caved in and got one for ourselves, I can attest it makes the driving so much easier...except for the one time it had us doing bad shortcuts through backroads in Maremma but that was probably us that had the settings wrong!
It had us cross a creek bed, thank goodness there was no water at that time! 
Your suggestion of the GPS for when you're moving around Tuscany is definitely a good one - since we also caved in and got one for ourselves, I can attest it makes the driving so much easier...except for the one time it had us doing bad shortcuts through backroads in Maremma but that was probably us that had the settings wrong!
It had us cross a creek bed, thank goodness there was no water at that time!