The only time I want them all gone is when I know they are still 1k marks. After that, I let the blade do the talking. By that I mean the sticky, suction feeling a blade gives you on the stones, telling you it's done.
The 1k marks I assume are the ones evident by deep stria as mentioned before. I've heard about this "sticky, suction feeling" you mentioned. Can't say I've ever experienced this before.