Here is my 2 cents: I took the gmat last week. I didn't really practice the IR, as I thought it was silly. With that being said, I went into the test and thought the IR on the test was MUCH easier than the Manhattan IR or the Gmatprep IR. Here is my advice: if a question is super long and looks like it is going to be a pain just guess and move on. You can essentially throw away I think 4 questions and still get a perfect score on IR. It is in your best interest to at least throw away a few but be absolutely positive on the ones you do do. It is an all or nothing game, so just take it easy and as you are going through confidently answer the ones you think you can and if you can't figure it out just throw it away and move on. Otherwise you are going to be crunched for time. That is what I did during the test and I felt really good about both the AWA and IR. But I haven't gotten my scores yet, so no guarantees.
