I'm a professor of sociology, and used this for my introductory class. The virtue of Conley's text is that it's very readable for undergraduates, it's organized clearly, and it's easy for students (and professors) to pull clearly-defined key terms. It's also very popular, and published by Norton, which means there are a lot of additional resources that connect to it. It's the textbook for the professor looking for the "path of least resistance," which was me during this semester.
Unfortunately, the book is also sorely lacking in some important areas of sociological inquiry. In particular, Conley gives very short shrift to feminism, critical race theory, critiques of colonialism/imperialism, postmodernism, and non-US perspectives. In short, if you want to prioritize a critical sociology in your classroom, or want to challenge the sociological mainstream, this isn't the textbook for you.