I am most familiar with the Prentice Hall Literature collection. This book is well organized and contains every genre of literature, thought provoking questions, a "reader's notebook" workbook for extended reading activities, and a comprehensive glossary. It is a text-book, but it is the series my county has chosen for grades 1-12. Of course there is lots of support on the web, and the book is available on CD-rom as well.
McGraw Hill offers the Reader's Choice series which again is a survey of literature with a focus on building vocabulary.
Holt McDougal offers McDougal Littell Literature which is a comprehensive survey tied to media presentations. The blurb states it invites students to explore art, literature and life's big questions.
Any publisher of textbooks will have access to the standards and the requirements of the NCLB, so that will help you in your decision making process. The only thing I would recommend is remember that you want to actually do some of the exercises from the reading text as well as from the companion workbook. The publishers normally put colorful pictures on the left so that while you are flipping through the book, you see the "pretty pictures". You want more than that in a literature series that will be adopted for 3-5 years.
For new literary classics I would choose either A Year Down Yonder or It's a Long Way from Chicago by Richard Peck for 7th grade reading. These are realistic fiction and hillariously funny books. Youngsters might relate to a great-grandmother who is still living.
Next as a literary classic I would choose Treasure Island by Robert Lewis Stevenson or Robinson Crusoe by Daniel Defoe. These are fairly easy reading with an exciting story of adventure and survival. Young people can relate to Treasure Island with the recent Pirates of the Carribean films.
You might want to check with your school district's requirements as to what the selections already are for your class.