At my shop trilogy has like 5x the rack space compared to discraft. They are completely crushing discraft. They are also crushing discraft out on the courses, I rarely see people throw discraft, but I see trilogy all the time
At my nearby Academy Sports, it's all Innova and Discraft. I did see Dynamic Discs starter packs, though.
At the various PIASs in the area, however, the Trilogy discs are totally dominant over Discraft (plenty of Prodigy and Innova, too, btw.) I could probably buy a complete bag of Trilogy products (meaning: a driver, control driver, mid and putter), but might not be able to do so for Discraft.
I've never loved or hated a discraft disc, but for some reason, the plastic they have, I just can't get used to. Nothing feels good in my hand like the Trilogy/Legacy or even Innova/Discmania plastic does. Just a personal opinion though.
I really like Titanium plastic from Discraft. Unfortunately, many of their discs don't come in Titanium, and then I have to search for a nice blue or otherwise light color; most Titanium is in dirt-color gold/brown or pink/purple that my eyes can't see so easily.
The Z plastic is okay. FLX added to anything (Ti or Z, etc.) makes it too soft for my liking. Pro-D Challengers are firm, but the discs are practically destroyed after two rounds or so (YMMV).
I would add that Discraft's colors, often pastel and pale, i.e. not bright and eye-catching, don't get my attention very well, as well.
Again, not bashing Discraft, and if they make a few changes I think they could make a big comeback. But right now Trilogy (especially DD and Lat64) is making a huge push, and they're succeeding in getting more market share. Ricky's World Championship will only help that.