My PRS-50 just arrived yesterday.
I chose the PRS-50 because:
-I like the no radiation disc
-Prefer sapphire crystal
-I think the 50 has a cleaner dial, kind of one glance tells the time effect
-I would prefer to have a date
-I think it would be easier getting an ETA 2824-2 repaired since it is still in production and most watchmakers would know what it is.