The Saturn sure looks like a winner to me. I am going to buy one as soon as it is readily available.
Beyond the larger build plate, is is something like 4x faster, due to the use of a monochrome LED panel. The $500 price is list, so I suspect it will be frequently discounted the same way the Mars is. Elegoo seems like a class act--I plan to stick with them, at least for the next round.