Totally in agreement with what has been stated here, Fidelio was a great saga, good actresses, amazing scenarios, good camera shots. To my taste Naugthy America became boring a couple of years ago, Wankz also did very well produced scenes, unfortunately it fell apart a couple of years ago too. Czech VR has been the last to fall a few months ago.
I appreciate SLR's effort, but aside from the harems, there aren't many scenes that I find memorable. The latest sites they have added are very low quality, blurry image, out of focus cameras, gigantic scales. I'm sorry, but I've had to hide a lot of studies so they don't show up on my main screen.
I think that the settings are still quite important in innovation, Naughty America in its best time used some great ones (mansions, deserts), which really made an epic scene.
As someone here says, I would be willing to pay more to get better production quality.