I've heard that CaptMoto has a bit of a problem with the charging lead not connecting all the time. I've also read something on PocketGPSWorld about the power lead on the TomTom not always making a good connection. It's a common problem I think.

TomTom Rider (v2) might have cured this problem. I'm not sure though.

Yes, my power lead screws into the Zumo holder and is supplied with 2 x tiny screws with locktite already on the screws. My Zumo unit connects with the holder with with lots of spring pin connections. Before I got my Touratech holder I had a problem with the pins vibrating and all sorts of problems occurred like I made a 25 minute phone call to a friend without knowing, one side of my headphones went dead and eventually the Zumo would lock up because of the vibrating pins powering up the Zumo and disconnecting several times per second. All sorted now though because of the Touratec holder.