We've used both for WDW and DL and have similar experience. TP tends to give you the best case scenario and it's easy to start lagging behind the plan. Ridemax overshoots on the times/waits and we were often ahead of our plan so plenty of time for snack/restroom breaks etc. I still combine both, I like to use TP for overall info; crowd calendar etc and making initial plans in advance as Ridemax only works a couple of months out. I am an obsessive planner so it's money well spent to me for 2 subscriptions