I'm by no means an expert in Tailoring as I'm just starting out myself. But when it comes to collars, just try out as many as u can (if you're doing MTM/Beskople) and just get the one the looks best on ya.
Hi PG,While we're on the subject, I DO want to ask you what type of collar that is. I started making shirts with AC and I'm very happy with my extreme spread collars (oh which I instructed them like 5 times what I wanted), but I do want a more "conventional" collars for more traditional settings. I remember from your brog that your collars are bespoke too right?