Abraham Seiden brings more than 40 years of teaching and research experience to this advanced introductory particle-physics text. Designed for advanced undergraduates and graduate students in physics, Particle A Comprehensive Introduction provides the most complete and up-to-date introduction available. The author focuses on the basic principles of particle physics, using recent research data to illustrate key concepts, and provides a wealth of step-by-step calculations to develop students' understanding of core principles.
Lacks the sudden brilliant insights and somewhat literary quality of Griffith's Introduction to Particle Physics, but brings a great deal more information to the table. Neutrino and Higgs information is lacking a bit, but much of the relevant experimental work postdates this text. I was able to follow along pretty easily despite not being a professional physicist, though you'll definitely want a decent grounding in ye olde Lagrangians and Hamiltonians, as well as group theory.
Overall, I feel vastly more informed of the nitty gritty details of modern hep (high-energy physics) than I was going in, and didn't have to expend too terribly much effort to get through.