I used the Nordian books and found them to be okay. I've had a look-see at some other series as well and they are more or less covering the same material. I did a combination - i read all the books twice and spent a lot of time doing questions. I would have chosen Bristol for the question bank if I had been given the choice again, as opposed to jaaexam.com. A lot of errors in that database, and a lot larger than Bristol (which is not a good thing - simply too many questions!). My course mates that used Bristol questions all say they recognised the majority of exam questions. That's why I needed to (mostly) sit the time out and they were all done in less than a third of the allotted time with the exception of FPL, MB and the like.