The 721 might be too sterile for my tastes. I am leaning more towards the 720 but would’ve preferred perhaps indices that we more white than ecru (cream) is it? I like how the font is as bold as the 47mm case.
I’m ok with having colored indices on my 372 but I’m unsure if I want to go that route with future Panerai purchases. The 587 might be an exception (just because.. Rad 40 case, MM) but in general, I prefer white indices.
Now take that very minor bit out of the equation and you’ve got yourself a very nice piece. Let us know how it ends 
Best, Echi