Fourty or so if you count the junk ones, 25-30 or so if you count only good ones. I have three sets of knives, belt, pocket, and watch pocket, and all have a set of knives that get rotated as the notion strikes me.
The standard pocket, being my 75 case, rarely gets any time off. When it does, its a Case 54 trapper that normally takes it places.
My belt knives rotate between Buck 110, buck 192, Case 65 folding hunter, rarely, a buck 684 in a leather sheath I made. I have a handful of belt knives I need to make sheaths for and I'll carry a few others occasionally too.
The watch pocket knives go between the Case Sodbuster JR I won from
Bloodloss
giveaway (I was carrying the buck 55 there until I gifted it to my lady), the Schrade 752 advertising knife I won from
seas165
GAW, the Pocket Carver and the Remington trapper (forget the model) that were both gifts from
Jakeywax31
, a Schrade USA 33OT, and occasionally I carry others, but those are the norm. Of those, the Schrade 752 is the one I grab the most. It's so light and slim, yet large enough to handle real cutting tasks.
I always have a Leatherman original in my left front pocket. I need a sheath for it, lost it when my house burnt but I had the leatherman in my pocket thankfully. And often times I carry a SAK tinker in my back right pocket with my hanky, with a lanyard sticking out for quick access.