Went to London this week for 1st time using COMAND. Wasn't sure about trusting the TMC, as a regular on the route, assumed that I knew best, but boy was I wrong. On the way down, I went my usual route (M6 M1), but it kept telling me to go M42 M40 - but did I listen? - did I %*#@!, so I ended up waiting in a Q on the M1. Decided to trust it on the way back, started off OK, but started to take me a way I didn't usually go. I just couldn't help myself from doing it my way.... Again. So I waited.... Again! Had a few short trips since then, and trusted the advice and it's been great ETA seems reasonable too!