Another thumbs up here! We found his site as we were planning our last minute trip last year for the week between Christmas and New Years. The trip was a Christmas gift from my parents and between making the decision to go and the time we had to leave I didn't have much time to plan. I can give it no higher praise than to tell you that even though that week was the single highest attendance week in WDW history and we saw outrageous wait times of up to 4 hours, we didn't wait more than 20 minutes for any attraction. Honest. The longest line I stood in was to buy lunch at a counter service place at Epcot!]
I know there are people who say the same advice is available here or in other books for free but I respectfully disagree. Maybe for "regular" times but for really busy weeks like holidays or spring break, his advice can not be beat. Those guide books are written for the 85% of the year that isn't "peak crowded" holiday weeks are different. TGM publishes a holiday survival guide for any holiday week. That info is priceless! You get a chart of least crowded parks per day and night (we saw a HUGE difference in crowd levels when we followed this advice) and it is VERY different from what you see recommended here. Actually, the very best tips for Christmas week were things that were in direct contradiction to what I saw recommended on the boards.
The new update is going to be very helpful in navigating the site. It makes things a lot more intuitive. There is a TON of information to be found there. Everything from least crowded parks to sample touring plans, recommendations on getting hard to get PSs, parade and fireworks viewing tips to things like how to prepare your children for things that might be scary.
As far as personalized iteneraries. Honestly, with the way he presents the info it's a snap to personalize it. He doesn't just say "go here, then there, then get a fast pass for this and stand in line for that." He explains WHY he is recommending things. He also gives a chart that lists the best time(s) of day to see any given attraction. Between the explanations and that chart you can easily customize a touring plan to your needs.
Definitely worth the money!!! We're headed back for Christmas week again this year and we've already got our subscription lined up!