Critical Reasoning

Since the official test is computer adaptive, you are pretty much guaranteed to see questions that are on the threshold of your abilities (neither way beyond your abilities nor way below), so it's hard to say what resource is best suited to your particular skills. That said, the OGs are arranged in order of difficulty, so perhaps you can find your "sweet spot" there.

Alternatively, some students resort to solving LSAT CR questions, but keep in mind that many of those questions rely on some formal logic that the GMAT doesn't test.

Cheers,
Brent

Great scores, Synchro!
How far are you through the 60-Day Guide?

It seems that, at this point, it's just a matter of fine tuning things. Start looking for minor issues that may be affecting your score. I like your idea of taking lots of practice tests. Be sure to carefully analyze each practice test and, while doing so, watch out for four main types of weakness:
1. specific Quant skills/concepts (e.g., algebra, standard deviation, etc.)
2. specific Verbal skills/concepts (e.g., verb tenses, assumption CR questions, etc.)
3. test-taking skills (time management, endurance, anxiety etc.)
4. silly mistakes

For the first two weaknesses, the fix is pretty straightforward. Learn the concept/skill and find some practice questions to strengthen that weakness. To focus on one topic at a time, you can use BTG's tagging feature to isolate one concept. For example, here are all of the questions tagged as statistics questions: https://www.beatthegmat.com/forums/tags/ ... statistics
See the left side of that linked page for more tag options.

If your test-taking skills are holding you back, then you need to work on these.

Finally, if silly mistakes are hurting your score, then it's important that you identify and categorize these mistakes so that, during tests, you can easily spot situations in which you're prone to making errors. I write about this and other strategies in the following article for BTG: https://www.beatthegmat.com/mba/2012/09/ ... n-the-gmat

Cheers,
Brent