I've had the S80 for 2 years now. The user interface can be customized to be as complicated or simple as you like. For me... I don't like the thermal helper, so I turned that page off. I don't like the airspace markings on the small moving map, so I turned them off. I don't use the task page, so I turned that page off. I didn't need all the fields on the vario page, so I turned some of them off. I love the flexibility it gives you since I like to keep things simple. Of course, this requires some investment up front to figure out what you want and configure the instrument accordingly. If folks complain that the instrument is 'too cluttered', they simply left everything 'enabled' and decided not to learn how to customize the instrument.

For me, the best feature of the S80 is the customer support from LXNav. In the past, I've made some complaints about certain features missing or minor bugs and LXNav has responded with software updates. Awesome!