It really depends more on the server. 500, 700, 1000, 2000 etc.
The machine slows down if it is to large a number. It seems to me that we should
find a happy medium. The difference between 300 and 700 is noticeable, but the difference
between 700 and 1000 is visually difficult to see the difference.
I really don't have the right answer. There probably is no result that will make everyone
happy.