I've been playing for a long time so I'm now to the point where I have just a couple of molds I love, which dominate my bag. It takes a lot to get me to try anything new or different, I'm pretty set in my ways. All my discs are max weight because I like to keep it simple, that's also why I have so few molds. Fewer molds means less decision making on the course, just grab and go. I learned a long time ago for myself that the fewer molds I carry to execute all the shots I need the better I do. Though the specifics vary its usually pretty close to:
Aviars: 4ish
I like stiff and beaded ones for putting, more flexible and beadless for straight upshots and I usually have 1 thrower beaded for more stable shots. At the moment I'm using 2 Judges for putting (c'mon, its an aviar. I do like them a lot tho). McPro's for upshots and a standard KC for throwing
Rocs: 4-6
KC rocs all the way. Been throwing stock KC's for something like 8 years. I recently started using a champ roc3 that I like but its really overstable. The rest of them vary in age and wear to get a smooth transition from super flippy turnovers to brand new stable. I'm also a big fan of the KC flat top rocs, got a couple laying around that rotate in and out of the bag to slow the break in process.
Fairway drivers 4:
2x Teebirds and 2x leopards. Been that way for a long time. Teebirds go from super overstable to stable, leopards from straight to flippy. 90% of my fairway shots are done with an OLD original star plastic run TL that came out as the craziest overstable teebird I've EVER see. After 6 years of heavy use and break in its still only has a little bit of flip with a super long, consistent fade. If I ever loose that disc my rating will probably drop 50 points.
Max D drivers 4-6ish
Destroyers have been the go too here for a long time. I really like the glide I get out of the pro plastics, so I'm constantly rotating brand new ones in and retiring ones that are too beat. I like the EcoStars a lot so I usually have one of those, and its not uncommon to see a an AJ or another star run in their, just depends on what I've got on hand or need.
I used to carry an overstable boss for the occasional anhyzer big D line, now I'm trying an Xcal there, which is the first time I've tried a new mold in a long time. Im really liking what I'm seeing from that so its probably not going anywhere.
Overstable utility discs 2
1 firebird, 1 monster. Love my crazy old, still meat hook overstable, champ monster. The FB is a new addition as I'm working on my sidearm game and I figure that'll be a good sidearm workhorse.
The only real gap that setup has is a "transition" driver to take me from my teebirds to my destroyers. I've found that 99% of the time it I don't need one, but every once in a while a shot shows up where I have to choose between really trying to crush a teebird or take a lot off a destroyer. I'm planning on experimenting with that slot soon, probably with PD's and thunderbirds. Who knows, I may even blow the dust off the Ole orc's and beasts