bought a few here and there and halfrauds always seem to have a decent price when on offer and you get the easy exchange if it goes wrong. The XL is cool but a bit clunky to carry about out of the car. You can use it while walking and riding dont forget and having had the XL it was a bit big for that kinda use.
Lane guidance is useful and if you are of the type to like a night time drive you will find on B roads you can get another 7%-10% out of the car just because you have an idea of where the road is going
almost like a little rally co-pilot 
Dont let the missis borrow it. mine has killed loads. I have never killed any. They are robust but women, mine atleast, have a psycotic need to destroy them.
You will find your hippocampus will shrink/stunt with the introduction of a satnav though. Not like you'll feel the brain damage going
on but its been shown that satnav use causes accelerated atrophy of that portion of the brain responsable for planning, route finding, remembering/organising landmarks, shortcut finding etc etc. 
so be warned. Maps might be a ball ache but they train your brain.
) 
