True, monkeys can be very charismatic. The Golden lion tamarin are a particularly striking primate that always seem to be the most popular monkey at Auckland Zoo; though my personally preference would be baboons. Given Terri’s North American connections, it’s surprising they’ve never considered Mandrill. They tick just about every box and would have also been available via Adelaide and Melbourne Zoo throughout the 2000’s.
All monkeys are great, but Tamirans, Capuchins and Spider Monkeys are best for me (all being very interactive species). Baboons are great, especially when they have multiple babies. It was fascinating during my last visit to Melbourne to see all of Melbourne's 20 baboons including the many babies interacting and playing with one another and the visitors.