Vacheron Constantin

When I bought the 4500 black I left a deposit for the 7900 in blue. I am lucky to have both (as well as an agreeable wife). I prefer the 4500 in black and the DT in blue. What is your opinion? ...  

I prefer the dual time, because of "no date", nevertheless, both are lovely

My slight preference is for the dual time given the overs philosophy of the timepiece.... Obviously, both are wonderful watches.... Much enjoyment, Filip

I like the dual time in black with the red gmt hand. But the blue is always stunning!