It probably depends a lot on your budget. My understanding is that the Yasko test is extremely expensive. You might be better off doing the 23 and Me test and then using the money saved to do the methylation pathways panel and/or NutrEval to see what's actually going on in your body.
Do you want the genetic test or a functional test of your methylation status? Health Diagnostics does the functional test for a bit over $300. That is the one that I used.