Much of my personality research has been based on the HEXACO framework (Lee & Ashton, 2004), which suggests that there are six personality factors: Honesty-Humility, Emotionality, Extraversion, Agreeableness, Conscientiousness, and Openness to Experience. For more information about this very well-validated model of personality, or to use the HEXACO-PI in your own research, please refer to the HEXACO website: http://hexaco.org
My personality research has incorporated the HEXACO model of personality into investigations of Status-Driven Risk Taking (SDRT; Ashton, Lee, Pozzebon, Visser, & Worth, 2010; Visser, Pozzzebon, & Reina-Tamayo, 2014), life aspirations (Visser & Pozzebon, 2013), vocational interests (Pozzebon, Visser, Ashton, Lee, & Goldberg, 2010), phobic tendency (Ashton, Lee, Visser, & Pozzebon, 2008), and the Dark Triad of personality (Lee, Ashton, Wiltshire, Bourdage, Visser, & Gallucci, 2013).
From my point of view, one particular strength of the HEXACO model over the Big Five/Five Factor Model is that it better accounts for the "dark" personalities that I study. In fact, we recently found that the HEXACO model, particularly Honesty-Humility, best accounted for the overlap between Dark Triad personalities (Book, Visser, & Volk, 2015).
For a great book that explains the relationship of HEXACO Honesty-Humility to these dark tendencies, get yourself a copy of Lee and Ashton's (2012) The H Factor of Personality: Why Some People Are Manipulative, Self-Entitled, Materialistic, and Exploitive—And Why It Matters for Everyone: The H Factor
My personality research is not limited to the HEXACO model. In a recent project, my colleagues and I (including Trent student, Farah Sultani) explored the Big Five model of personality in relation to self-objectification and Enjoyment of Sexualization (Visser, Sultani, Pozzebon, & Choma, In press). We found that self-objectification was associated with Big Five Neuroticism, whereas Enjoyment of Sexualization was associated with Big Five Extraversion.