As usual I agree with Leviosa about it being a matter of preference. I suggest that if you are thinking of leaving OCR (as a non OCR person I am following the threads with interest!), you should consider all alternatives and pick the one that best fits your teaching style and the kids that you teach. My suggestion would be AQA as their papers are accessible and markschemes easier to understand than in the dim and distant past. They also have about 20 different units over spec A and B so you should find something suitable. Don't know about Edexel and WJEC but I know there are lots of people on here who are perfectly happy with them.