Some facts to help you decide between the two TVs:
The 98 was built to a much higher price point than the 93.
The 93 is lighter in weight and its inventory was cut by 50%.
The 93 appears to be a cost cutting exercise and no progress has been made on picture quality in fact some reviews criticise picture quality compared to the 98 and the web os is slow.
Carbon fibre, camera, THX, USB3, 2-speakers have all been removed from the 93 and the screen is no longer fully enclosed and supported along the bottom edge.
The 93 has a wall mounting option, a different pixel structure, different operating system and some report lower lag but this may be associated with picture processing.