Let's see...
1. Belt kit. Maxped low profile pouch with psk stuff, and GI canteen w/ cup. I have a 3-5" fixed blade and Vic Swisstool Spirit on the belt as well. Usually this is what I use as a base kit; it's the minimum I take when hiking, especially if it's a longer trail.
2. Camelbak mil HAWG. Hiking backpack, carries a few redundant essentials, mostly more durable or better versions (heavy duty space blanket/tarp, weather dependent clothes, flashlight and headlamp, paracord, folding saw, extra firestarting stuff, extra water purification tabs and a secondary container, compass and map, FAK, heavy duty contractor trash bags, etc.)
3. Maxpedition Bottle Holder kit. Has two pouches attached, one for a boo-boo kit and the other for cordage, a few firestarters, and space for added items. Usually used on short walks or outings in the city or parks.
4. Maxpedition Pygmy Falcon II. EDC Backpack that has PSK stuff and a FAK in it. I live in earthquake country and I commute to work. So I carry stuff to help see me through a disaster where I'd be stuck in the city. Really only has one or two different things from my Hiking pack and belt kit though (Heavy Leather work gloves, Pepper spray, can't think of what else right now).
5. Car kit. All in a duffel bag, has PSK, FAK, and cutlery stuff, couple of liters of water, Blanket, towels, etc. This kit tends to get the "overflow" from my other kits since it's stationary for the most part. But I keep it in a duffel so I can carry it if need be. Also have a light daypack in it, in case I need to travel lighter or more comfortably.
I guess 5 it is
I made a belt-pouch kit for my Lady too, so I guess that makes 6 actually.