You are not alone. My son has started using it this fall with the DVDs, and I'm already thinking of switching. In our case, I think the videos take too long to make the point of what the program is supposed to teach. Other books he has read have said the same thing with much less time. I have more thoughts on it, but I'd like to withhold them a bit longer. I am giving it a few more weeks to decide, but I have already started looking at other options for him.
My older daughter, who loves writing, really enjoys Writing Strands. She thinks it gives her the most freedom to write want she wants, and it also teaches how to write from different perspectives. She started in book 3 and has now progressed into book 6. I think with this program, you see the best results when you stick with it for awhile.
She also does alternate her writing with Writing with Skill which I think helps her focus more on specific skills, of course. It also gives more detail for the grader to see what to look for.
I think there is no harm in taking occasional detours in writing programs, and its been helpful for me to have more than one perspective at times.
For our favorites so far, I'd say Writing Strands and Writing with Skill.