Back from a week in the Alps, I'm close to throwing the 660 out. Too many times it couldn't tell left from right, was hard to read in some tight situations (wound going the wrong way on a one-way street in Cortina d'Ampezzo), and generally tried to screw me over. NTL, with auto-compute off, the only time it recomputed any of the routes I loaded was when I expressly said "yes". OTOH, the damn thing kept whining about wanting to recompute - covering the map.

One of the recurring WTF moments was approaching a hairpin turn on a pass road. A little footpath with a name would trigger a "keep right on Megazilla Pass road". And then totally miss a major intersection requiring a turn.

The 660 was installed in a K1600GT (drops in where a Nav V goes but doesn't respond to the "wonder wheel" - meh).