Review: Hema Navigator - HN5i

Having previously owned both a Magellan Explorist XL and Garmin Nuvi I eagerly awaited the electronic version of the Hema maps I love and that have seen us throught the outback a number of times. I was not disappointed with the content,accuracy or functionality and I have to say from this perspective the HN5i unit is brilliant. I even managed to load the maps to PC(from the DVDs) AND download updated maps from the website and install in the HN5i ,without any dramas.
Unfortunately the same positive comments cannot be said for the readibility of the screen in bright sunlight(the most common outback situation).
The Magellan and Garmin were excellent in this regard.
The iGO screen is by far the worst from a viewing perspective with some improvement for Ozi and Memory map. I am still experimenting with mounting locations,have had the screen brightness at all settings and have manipulated the various screen colour palettes to improve things but am not having much luck. I am so disappointed i have written to Hema support and am waiting feedback.
Maybe I should have taken notice that a "sunshade" was an available option - however,shading the unit with my hands doesn't do much - and the price of the sunshade is outrageous when you add the freight cost. I would like to rate the unit 5 start but can't get to more than 3 star until my problem is fixed.