Sorry to keep asking questions, and thanks a lot for all the replies

I've just looked at the figures:
moneysupply - present : 13162561
moneysupply - 960 blocks ago : 13056462

The difference in the two is 106,099 - so on average, each block is giving out a reward of just 110 HYP.

Earlier, you mention that a block is "more and more likely to produce a stake reward, because its weight gets larger."

As all the blocks are competing against each other to get one of the 960 stakes a day, I am unable to figure why 1,600 HYP is the optimal size block.

For instance, if I had blocks set up in blocks of 4,000 HYP, straight away it would have much more weight than other blocks that matured at the same time. Also, in comparison:
1,600 Block @ 9.8 days = 1,600 weight (reward 7.5/365*9.8*1600=322 HYP)
4,000 Block @ 9.8 days = 4,000 weight (reward 7.5/365*9.8*4000=805 HYP)

By 10.8 days
1,600 Block @ 10.8 days = 3,200 weight (reward 7.5/365*10.8*1600=355 HYP)
4,000 Block @ 10.8 days = 8,000 weight (reward 7.5/365*10.8*4000=887 HYP)

What I'm saying is, if there's going to be a battle for a share of the 960 stakes every day, then surely it's better to have the largest block weight?

Right now, from what you've mentioned, there's no real issue of that happening at the moment, but as more and more blocks are fighting for their reward, isn't a higher weight beneficial, to get you to the "front of the queue"?

Cy