In reply to Webster:
> DMM walnuts size 1-11 (plus torque nuts 1-4), doubled up with DMM peanuts and offsets (plus DMM micro-nuts size 00-0.75).
How on earth do you ever get up anything carrying all that?
Pesonally, I go for 1-11 Wallnuts, and a full compliment of alloy and brass offsets. There is no gap between them, that's why the biggest brass offset is number 6 and the smallest alloy offset is a 7. I also have two size 4's, but that's through accident (read: swag) rather than design.
If I'm on a grit route I'll scale that down to just wallnuts, and if I can get a handle on what I need from the bottom, probably not even a full set.
Hexes are just a waste of space/weight and cause significant ear damage, it's the 21st century, just use some cams (nb: touchpaper lit...).
The Ex-Engineer:
Really? Peenuts over brass nuts? As I'm sure you're aware, the brass is soft and deforms. The ally is less soft, and less deformable. So in a non-perfect placement, its more likely the rock will 'reshape' the brass nut to fit, and it will stay in. The harder alloy of the peenut is less malleable, and can exert huge forces on tiny bits of rock - possibly resulting in their failure and subsequent appearance of your previously placed nut in your hand. In terms of kN rating, brass nuts are the same as peenuts (equivalent sizes) if not stronger.