These are the folders I'm using and abusing right now. Price ranges from $10 (Mini-Blackhorn) to $250 (Rukus).
From the top down in the center:
Benchmade Rukus
Benchmade Mini-Rukus
Benchmade 707
Benchmade 705-401
Benchmade 530
Case Mini-Blackhorn
Benchmade 310
Benchmade 10610
Spyderco Atlantic Salt
Spyderco Native S30V
On the left (top down):
Leatherman Charge Ti
Leatherman Squirt P4
On the right (left to right):
Buck Medium Trapper
Victorinox Soldier
Victorinox Bantam Alox
Generally, each one fits into a certain category based on the situation (with some overlap):
Daily Carry: Benchmade 707 or Leatherman Charge
Camping: Either Rukus, V-nox Soldier, Leatherman Charge Ti
Boating/Diving: Spyderco Atlantic Salt (or sometimes Benchmade 530)
Dress carry: Benchmade 310 or Benchmade 705-401 or V-nox Bantam Alox
Work: Spyderco Native
City Travel: Leatherman Squirt P4, or Benchmade 10610, or V-nox Bantam Alox, or Buck Med. Trapper, or Case Mini-BH
This list isn't set in stone, I switch them in and out often. Basically, this is what I have in my apartment currently.