Hi Guys,
After a break after getting my MCSE I am ready for a new challenge and will be going down the CCNA path

My questions are to do with CBT Nuggets, during my MCSE studying CBT Nuggets featured as my main study material and I am hoping to use them for my CCNA.
Questions
1. Are the CBT Nuggets for Cisco any good?
2. I have a version of CBT Nuggets at work but it says it is for exam version "640-607" and I believe we are now up to "640-801" to save some money will I be ok with "640-607" or should I go and get the new version, what is different.
3. Is this a good time to take a CCNA for example is there going to be a new version of the exam in a month etc.
Thanks for the help