Women who have beauty, finesse and some acting ability and seem to enjoy what they're doing as well as not just be pushed around the guys as pieces of meat but are involved in the scene.
That narrows the field down hugely. Especially when you look for beauty to start. I dont know how you can compare Aurora Jolie or Katja Kassin to Krystal Boyd/Anjelica for eg. They have to be model-level looks for me (cuz why not, it's the internet, not me trying to score a date

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The other thing is they cant be doing a football pumpup chant-style ridiculous overacting fuck me fuck me screaming bs like Kelly ("Fuckin'")Wells. Wells is actually kinda pretty, til she starts having sex, then her mouth turns into this wierd grimace and all her chanting/yelling. Usually with the guys semi-abusing her. Off-putting. I cant identify with changing positions every 15 seconds and slapping the women or stretching their mouths wide with fingers. wtf is that.
Adriana Chechik is pretty cute too but always ends up covered in slime and grimacing a bunch. And doing those frantic pump-up 'fuck me fuck me!' chants.
I admit Boyd doesnt really get too involved and I cant tell if she's really enjoying herself often. Though it did delight me she did A2OGM so she is daring enough. Plenty of anal, which is great to see in a model-level girl.
So the few that do meet this criteria are Chloe de Lysses who someone mentioned - she controlled the scenes a fair bit, and had this amazing elegance. What do you expect from the French, they have cinema in their blood!
Another French actress, Fovea - redhead and incredibly beautiful. Though most of the silly movies she was in had all these bondage and burlesque costumes and silly plots - in fact, her outdoor gonzo scene with Rocco was the best though it was too quick and a bit too frantic (give us a minute to absorb what's going on before switching, thanks?) Too bad Rocco is so pushy though, she coulda controlled the scene more as she does in other movies. Late 90s.
Hungarian Cayenne Klein. Supposedly she doesnt enjoy anal, which is testament to her being a great actress. And she had the prettiest gape - all puffy and glistening, pink and lovely - not flabby and used - and she took some pretty large dicks. In one Rocco film (Rocco's not in it though) she has her hand except her thumb and a pretty large guy in her ass. I so wish she had done a slow-moving 2-guy-only DAP shoot (like for Tushy). She does cams now but pussy only
Lucy Lee. Not that Lucy Lee, the cuter Czech one. Too bad her DAP scenes are so short and few but she did lots of anal.
Mellisa Black -- also Czech. I really liked her screen presence/acting, and she's pretty hot but not quite as hot as the others, but so many great DAPs where she's quite involved and enjoying herself (with french performers usually, in fact. Cant remember those guys names. They worked with Daniela Rush and co quite often. "BIIIIIIM!")
Gisele Gucci - Brazillian girl, and quite into her scenes, and she gapes nicely and can take big cocks pretty comfortably. Unfortunately her scenes are rare, but there's a couple incredibly good ones with her.