You could do either - they are both excellent. Igniting Your Writing has 3 levels to choose from, which can help with varying writing abilities. It is not writing from a model that is "classic" though (as Write with the Best is). Here's a link about Igniting Your Writing that Carrie wrote:
viewtopic.php?f=6&t=3813
Here's a description of Igniting Your Writing:
We also recommend Igniting Your Writing for descriptive writing instruction for levels 4-5 and up. It is written directly to the student and includes 3 levels for each of the 24 lessons. Lessons are skill-based to help students improve as writers. Levels include Start-up, Intermediate, and Advanced. This curriculum helps insecure writers, natural writers, and unwilling writers gain confidence and competence in writing.
Here's a link to more information about Igniting Your Writing:
http://www.homeschoolwriting.com/
Here's a description of Write with the Best:
In Write with the Best, literary passages from respected and well-loved authors are used to teach students how to write. Creative activities break the writing into manageable chunks and help students identify what makes a literary work "great". Students are encouraged to make writing more vivid, and the student ultimately produces writing that models the genre of the literary passage. Guidelines for evaluating and grading writing, suggestions for adapting the curriculum for different learning styles, and student proofreading and writing guides are also valuable parts of the program. Each daily lesson takes only 15-45 minutes, is addressed to the student and can be used with all children in a family at the same time. The program includes all needed excerpts from all of the literature that it models so that teachers are not required to purchase additional material. This curriculum is a genuine, incremental (step-by-step) program which requires minimal teacher involvement towards the goal of mastery of creative writing. Hearts for Him Through Time: Creation to Christ will schedule lessons from this guide twice weekly. For grades 3 -12, but best suited for grades 4-8.
Nine different genres are covered:
* Describing an Object from Jules Verne - a Place from Charles Dickens - a Character from Daniel Defoe
* Dialogue from Kenneth Grahame
* The Short Story from O. Henry
* Fables from Aesop
* Friendly Letters from Robert Louis Stevenson
* Poetry - Rhyming Verse from William Wordsworth
* The Ballad or Narrative Poem from Henry Wadsworth Longfellow
You can click here to view a PDF of part of Write with the Best:
http://www.edudps.com/WRITE-WITH-THE-BEST-Vol-1.pdf
I hope some of this helps you in your decision!
In Christ,
Julie