I am considering the purchase of the One IQ. I have a One version 2 at the moment and have always found the screen to be adequate even when selecting postcodes. I often wondered what the advantage was of the wider screen since when navigating you view what is in front (vertical size) rather than what is to either side. However I wonder if the XL version better suits the lane guidance system especially where lane arrows are shown in the status bar. Comments appreciated to help make my decision.