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.

I'm a new user of your fantastic website. I'm a brazilian native, that is now perceiving the increasement of coorporations seaching people that knows the chinese language to work. I don't have a job and it is the reason of my interest about learning chinese. I hope that I can complete this course with your help.