Of the various studios, I recommend them the highest, but other reviews suggest some of their product is deficient. Avoid, avoid, avoid. Unless you like cheap comps. Almost worse than a tape. Very, very good.
Discs tend to run longer than other studios, and good with extras.
I only own one, but secondary sources confirm their quality. This is put out by Vivid, but the format is totally different. Very few condoms. Not too bad. Definitely worth snagging at least one.