I too have been adding to my arsenal, so I'm carrying more than what is neccesary, but here goes...
174 dx valkyrie - drives w/ headwinds, lots of fade
155 champion valkyrie -drives w/tailwinds, most of my drives recently
*174 and 175 dx beast - when i want to compare between my valk and beast i drive with these
*174 dx archangel- straighter drives, to comare with the valk
166 champion shark -most second shots are with tis disc, witht he lighter weight i feel like i can really finesse it to where i want
170 and *176 dx roc - when i don't thnk the shark will be quite long enough
*171 and 174 z hawk- sidearm midrange approach shots
*172 dx spider- when a putter won't be enough and the shark is too much, i use the spider
175 86 softie- anythingunder 200', and close range putts
*150 dx aviar- sidearm putts, we play catch with this disc too...
170 z putt'r - putts with wind, some longer putts
*174 magnet- practice putting
*172 dx xd- practice putting
*177 dx stingray- i hardly pull this out of my bag
the * are discs that i dont' use that often, these are also discs that ilet other people use that don't have any discs of their own.