An alternative more costly option is to use a Bluetooth enabled PDA with mapping software like Memory Map and a bluetooth gps. Luckily for me a mate at work has loaned me a PDA, I already had the software and I bought the gps which is about the size of a zippo lighter for about 40 quid. Apart from the limited PDA battery life it works fantastically plus you can also tweak maps from Magic, import them and load up the data points and pdf’s to the pda too. I’d recommend it to anybody who can afford/justify it for finding difficult spots but get an in-car charger or spare battery and take papery maps with you just in case.

-Chris