Knowing what I know now, I would have finished reading through the WoT series. I stopped halfway through book 4 because RJ can drone on and on about nothing (probably why it took so long to get to where it is now), but seeing as how it's being completed by Brandon Sanderson, I may have a reason to finally finish the series. I should probably just read from the beginning again. Please tell me it gets better after book 4.
There's much debate on that. I, personally, enjoyed every book except for the tenth,
Crossroads of Twilight, and even then it wasn't
completely bad. Most people will tell you nothing really happens in books 7-11, which I tend to disagree with for the most part.
Winter's Heart, the ninth book (and possibly my favourite), had some very major things happen and significant advancement.
However, if you didn't enjoy the first four, you may not enjoy the ones that follow. Which will make
The Gathering Storm and subsequent Sanderson WoT novels incredibly confusing.