i have 4 wireless controllers that i dont use, and 2 play and charge kits. i have one official wired one that i use most of the time as it is lighter and more comfortable. of course thats for the 360 in my room where i have it hooked up to a computer monitor. in the living room on the big screen, i use wireless - and i have 4 controllers for that console, and 2 play and charge kits. when one dies i plug that in, and let it charge overnight.
so yeah, 8 wireless, one wired, and 4 play and charge kits. i also have the standalone quick charger for the living room as well.