According to my personal experience and the understanding of nearby test-takers, online courses are relatively reliable.
It is the same as on-site face-to-face courses. It is just later than face-to-face courses. You can rest assured. Participate. After all, the time is flexible. It saves a lot of time on the road.
The exam I took last year, 423 passed successfully. I also wish you a smooth pass in 2012.