Need help for Nikon D7000 vs Canon EOS 7D

I haven't found any problems with the AF system on my D7000.

However it is a sophisticated AF system, and I have taken the time to understand the various modes and options.  If you don't do this, you may find the AF behaving in ways that you don't understand or intend.  If you do take the time, you will find a very capable and rewarding system.

I also tested my AF system using a sensible and reliable method to verify that it was working correctly. Took about 2 hours in total; well worth doing.

Shane