Magellan eXplorist 400 Handheld GPS Receiver

I bought my explorist 400 to use for geocaching and have found that the unit its self is good and fairly accurate but that is where the positives stop. The unit has the ability to download maps and other information, but trying to find suitable maps of the uk is like looking for hens teeth, the customer support from Magellan is zero, i really wish that i had done my homework, do yourself a favour and buy a garmin which has much more available map wise for the uk