
Ooooh the copyright folk will love you!!!!
Where are you Andrew? Can you get to a store or do you live in the back of beyond?
If you can get to a store the sales folk will fall over themselves to give you a demo (they're often on commission!) so take some maps to try it out.
If you live in the back of beyond/on a desert island/at the top of a mountain and have no option other than mail order and an impatient wait for the next ship/truck/plane/chopper then bite the bullet, buy the most expensive model you can afford and go for a brand name such as Hewlett Packard. The market is so cut throat you will generally get what you pay for.
Get a laminator too, and then you can waterproof your prints.