Just to clear up the last posters comment...
touringplans.com will charge you by the number of days you need planned- if you want plans for 5 days then you will pay for 5 plans
tourguidemike.com only has a one time subscription fee that you can use from the day you sign on until shortly after you return from your trip
also, these provide very different information...
touringplans.com will have a step by step plan for each day based on information that you provide (priority seatings, mid-day breaks, etc.)
tourguidemike.com gives you all of the information (which park is best on what morning, evening, etc. and which rides have longer waits and when) and then lets you decide what order to tour in based on your wants and needs
I have never used touringplans.com so I hope my information was accurate. I do use tourguidemike.com (TGM) currently. We are planning for 7 for the week of 4th of July, 2005. Yes, I think we're crazy, but that is the only vacation opportunity for next year. I can't reccomend a product that I have not used, but I really love the TGM website...he is always updating the information.
Have a great trip!!!
Edited to add: after re-reading the original post, I think you are looking for information you can use to plan, not just step one, step two type plans. In this case I would definately use TGM. He makes suggestions as to what are the best days, times, etc. (based on experience) and he backs up everything with simple explinations. I like making my own plan, but I love having expert information helping me along the way.