Mark's Opinion about the GPS
"Incidentally, I have a Garmin GPS-12 and am delighted with it. It is small, fast, cheap, and well-designed both physically and operationally. I use lithium batteries, which have half the weight and at least twice the life of alkalines, they can be stored for years, and tolerate low temperatures. The increased lifetime makes up for the extra cost.
I bought the device for kayak trips in the Swedish archipelagos
where lack of distinct features make navigation by map and compass
a nightmare. Paddle 500m, look back, and all you see is a uniform
line of trees across the horizon; look forward and you see dozens
of indistinguishable skerries, if anything. However, now that
I have the unit, it will be at the bottom of my pack as a backup
on hiking and skiing trips too. There have been many times that
I was 95% sure that I could negotiate a short-cut by compass,
but wimped out just in case I missed joining the trail again.
Now I can afford to take that 5% chance. "
From: GPS coords for Swedish mountain huts, by Mark Harris 1998