I have the predecessor of that model, mine is just a tom tom style/size unit - not the nice big touch screen. I think mine is an Adventurer 7000 made by Road Angel..
It works ok but I have not been able to master the memory map side and the satnav function on-road isn't great (directions and route finding are much poorer than TT for example). I would check out both of those aspects with this new one before shelling out my £££.
I have bought a netbook and installed MM but the antenna keeps making it crash so getting a bit tired of it.
I am going to have one more try with a Garmin antenna, as maybe a bit of quality and back up will help.
I will also be trying the antenna i have on another laptop (when i get it back from being repaired ) just make sure, but i know it does not work anywhere except my living room on the netbook which is not much use.
I use a HP PDA - travel companion, with wifi, bluetooth and inbuilt GPS
it also has a version on MS office etc, and email
It came with Tomtom pre-installed,
I also had Anquet maps on my home computer, as was able to install the PDA version onto my PDA from this,
so i can now drive around with the Anquet 1:500000 OS maps and location shown on them, if i dont want to use Tomotom