I have a close Chinese friend who listened to some of the recordings on my IPod - she said go with CLO. She constantly remarks on my great accent which she says is always the biggest problem.
I travel a great deal and knowing Chinese, even a little, can only be helpful when 1/4 to 1/3 of the worlds' population speaks Mandarin Chinese. You are doing a great job - I seem to be going very slowly; however, my friend says I am not but rather she is impressed with where I am and again is most concerned about the correct accent.

CLO is progressive so it helps reminding the bases and the written language (thanks to the new feature that teaches how to write the characters). It is also a real online "tutor", and everyone knows that repetition is the only way to learn a foreign language with efficiency. I also use Chinesepod as a complement for spoken language. I think these two chinese podcasts should not be considered as competitors, but as complementary tools. I hadn't spoken chinese for three years until I found your website. I am so happy to recover my former level and even more.