TomTom i think are one of the best makers of sat nav's on the market today. I sell loads of sat navs every week through my Ebay store, including a great range of TomTom.
We also do a lot of extra's for the TomTom. We can add voices, Ultimate camera packages, which include virtually every camera used in the UK and also a professional HGV / Truck drivers package. This helps large vehicles avoid routes they are not aloud to use due to height, width or weight.
Yes we have all done it, put in a passcode then 2 months later dig out the TomTom and can't remember it. Don't despair, we can also reset this for you giving you back your TomTom.