that's not necessarily true. I heard Arfken does not have solutions to the problems. That is a major negative. There are books like that with very few solutions, few examples, etc. All these factors make it much more difficult to learn from, than a book that has a solutions manual, numerous worked examples, etc.
Also, some books have typographic errors, small and/or hard to read fonts, or bad organization.
Thank you, that's what I have in mind now. Would you consider "Mathematical Methods for Physics and Engineering" by Riley a good mathematical physics text to study from? The major plus is it has an answer book for every odd problem and numerous examples.
In addition, what would you recommend for a readable graduate level quantum mechanics text that has numerous examples and a solutions page at the least?