CP CP
68
5205G
is my choice. I feel that the watch looks smaller than 40 mm, making it suitable for suit and business casual. For me, I would not wear 5146 or 5205 with casual wear. Also the concave bezel makes it less likely to get scratched. The only issue I have with this watch is that it's not easy to read the hands in dark environment.
I tried the grey dial version as well - it's slightly dressier than the black dial, but in the end I chose this.