I've been doing a practice test from MGMAT or GMATPrep each day in the final week leading up to my test for stamina and a better sense of timing overall. I've also been doing reviews from the ManhattanGmat math (and SC) books and Kaplan 800 for CR and RC, as well as looking at Quant OG.

I think the more practice tests the better, but keep in mind that MGMAT is quite a bit more difficult (since none of the questions are experimental) in the math.

anyone else have thoughts?

The thing with the practice tests is that they take up A LOT of time. I agree it is the best way to build up stamina and focus which you will need on the real test.
I dont know (for me) if doing a test EVERY day will be the best use of time.
Currently I am focussing a lot the OG 11 guide. Ensuring that I go through the questions thoroughly. Understand different ways to approach/answer questions, shortcuts/techniques to answer questions quicker, recognise patterns etc etc.
I aim to do at 3-4 practice tests within the next couple of weeks (2 MGMAT and 2 GMATPrep) ... making sure that I review all the questions and ensure that I pay particular attention to the ones I got wrong.
Thanks.

In the final two weeks, my suggestion is to wind down the studies that involve learning new and harder materials and instead shifting focus to reviewing what you've learned, what mistakes you've made, and your lessons learned. Three weeks before my exam, I decided I'd invest an entire week to prob, perm and combo questions and it was a complete waste of a week - I would have been better served reviewing my fundamentals. In any case, the idea is to refrain from introducing new material that will shift your focus and instead reinforcing what you've learned in the past few weeks/months.

Good luck.

sound advice mayonnai5e.