Different people will tell you different things about Roger. I would heartily NOT recommend using him for BEC. After going through the first part of Roger's BEC, I knew I would be in trouble if I'd done the rest, so switched to Gleim for that one.
Strengths of Roger: He's a GREAT person. Keeps you awake. Beautiful risque sense of humor that will often make you belly-laugh. Unless you're a forex student, in which case you probably wouldn't get any of the humor. He's also adorable and I love his Jewish tan (I think he said he's Jewish?) but that's neither here nor there. I can't wait to see his vids in like 20 years when he's really old and still hard at it…it will be just as hilarious I'm sure.
Generally good practice questions but they sometimes lack variety. They get stale after awhile. I found that working some of Gleim's questions was a good thing for me, as they're a different flavor (and harder than Roger's.)
Weaknesses of Roger: Textbooks. I do not like them. I can't speak for REG yet as I'm just now going into that one. I don't like his FAR or BEC books at all. The AUD book is ok but not what I'd call outstanding. The textbooks contain way too much information and there are many topics that get muddy explanations or overly long explanations. The website can also be a real pain in the butt sometimes, especially the practice questions. Can't make a comment on his audio lectures or flash cards or other ancillary materials because I don't have those.
And…although I do like the lectures, I learned over the course of doing FAR and AUD that I am not someone who learns much from lectures. I learn from hands-on working of problems. Having gotten my first BS degree in Chemistry, I will swear to the fact that those people who DON'T work enough problems (more than those assigned in class) will: 1. do poorly on the tests;
2. not understand the material, even if they luck out and do fine on the tests; 3. will not develop a deeper understanding of the subject; 4. are basically wasting their time and money because the whole point of taking a course is to learn the subject!! Unless they hate the subject and just have to get through it to get their degree (acceptable excuse.)
I will also agree that taking notes on the problems you work is a good idea…but don't over-do it. I filled about a ream of paper with my FAR notes. I never did go back and review them though, because I had no time to wade back through that mountain of paper before taking FAR. So if you're gonna do that, keep your notes very, very brief and only take them on the difficult topics.
Despite the weaknesses, I would not say that anyone who bought Roger made a bad decision. His pass rates are about the same as any of the other vendors though.