This is almost exactly where I am. I am a clean to medium gain player. I am not a huge fan of playing high gain tones. They are way more compressed and distorted for my taste. The Dragon II pickups were just too aggressive for me. I get a much wider range of tones from the 57/08 pickups. Honestly, I have 57/08 pickups in most of my PRS guitars. I was lucky enough to find guitars that came with them stock that I wanted. A couple that I have that are a bit unique to have them is a SC HBII and a P22 Trem.Pickups can't really be discussed in a vacuum. A lot depends on playing style, amount of gain the amp is set at, preferred tones, etc. We're all different. I can share my experience, but yours may be vastly different.
I'm a low-gain player. I play at the 'edge of breakup', and prefer vintage-style, single channel amps. The Dragon IIs didn't work for me, I was after something closer to the old PAF stuff. The 57/08 has a nice balance between treble and bass - for me. YMMV.
I love the 57/08s. They're my favorite PRS traditional humbucker. Dragon IIs worked better with higher gain sounds than the stuff I do. That doesn't mean I didn't find them useful in my work from time to time, but I was much happier with the 57/08s on the guitars I've owned that came with them. My #1 is still the McCarty Singlecut that has 57/08s, though I do have other PRSes with different pickups.
For something a little hotter, I very much like the 85/15s that came with my CU24. They have plenty of treble bite.