well speaking of turrets, how many diesdo you all use on your presses?

there the resizing- die (full length and/or neck)
theres the powdercharging die
the seating die
and the crimping die
...

Ive seen some presses with a single die, other with a pair of die other with turrets of 3, 4 and 6. what is the point of a 6 die turret what other dies are there that you would recommend? I know that you explained the difference between the presses and I realize the difference between a regular and a progressive press but its the dies that I would like to know more about.
You usually find them in kits of 2 or 3 but how many other kinds are there and how many and which do you all use?

thanks... glad to be aboard :-)
hope i dont drive you all crazy with my newb questions