Which one to choose? CI v1.6.3 or v1.7?

[eluser]got 2 doodle[/eluser]
IMHO go with v1.7, if you are learning CI there will likely not be anything broken that will affect you. It's more than likely that errors people are finding are due to the upgrade process or in a subtle change in the libraries example $this->db->get_where() used to be $this->db->getwhere() prior to v1.6.

The documentation is always updated with the version release and it's not a bad idea to read the changelog to get an idea of what was changed and why.

Developing an app in 1.7 right now, so far no problems. I started with v1.5.4 and the upgrades have always gone quite smoothly.

I don't think that Ellis Labs would release something that was not fully tested, but every now and then something gets through.

doodle