Based on the Italian registry, the Falcon 2000 (not the EASy version) is the most popular (10 Falcon 2000/2000EX vs 7 Falcon 900/B/EX).
However, I doubt you would be very successful without experience on type.
Do you imagine yourself flying 50-100Hrs a year as -I assume- PIC without previous experience? Do you have any business aviation experience at all?