nowadays, CR is hated for it's low quality video (artifacted 480p upscaled stream) and been labeled as one of the main law-bullies for the copyright bullshit that has very much shortened the list of active sub groups.
as for best subs? not so much. They're fast, yes, as they get a copy of the show in advance for a head start on subbing it, and better than hadena, yes. It's true that they have gotten much, much better in recent years, and are at best on par with any of the other speedsub TLers, but CR does tend to fuck up on several things, and for reference/japanese-type stuff where a TL note or two would be quite helpful, never one. Even the groups that rip subs from CR generally have a TLer go through it and make enough changes regularly enough to warrant it as something that should be done each episode (and do OP/ED/signs/writing subs).
sage because offtopic rant.