Route Planner websites

[imd123]

Does anyone know which is the best route planner site please or does it depend on the journey?
I've checked 4 sites and also the Tom Tom on a journey we do regular and got times of 2:39,2:40,2:59,3:07,3:10 and in fact the jouney always takes approx 3:30 hours although all mileages were close.
We are going on a journey in the morning and times are 4:05,4:07,4:17,4:34,4:40 and mileages range from 230-253. All routes have been quoted as faster route.
Out of interest the Tom Tom comes somewhere in the middle on mileage and time.
Thanks to anyone who replies

[KARL]

No route planner software will do anything more than give the best estimate it arrives at - actual travel will take as long as it takes.

[Buenchico]

The AA website is one of the best:
http://www.theaa.com/route-planner/index.jsp
(It's what I always use anyway!

[boxtops]

Lots of answers on the duplicate post http://www.theanswerb.../Question1049482.html