NOBDII does seem quite popular. It's also used with a tie frequently, right? The hidden buttons sound like a great idea. I'm also interested in a pic and, if you don't mind, the order number so I can steal it.
I figured others may have their own preference. I find that copying measurements rarely works for me since I am on the shorter side and have a slightly short and wide neck. I may take your starting measurements and slightly modify them on a future order. If I try the NOBDII collar I'll likely have to reduce the height as well.