Personally, I feel like if I take a benzo before I take a shot of meth, or soon after, it has a slight effect but not enough that I feel like it is worth taking. It helps with the non stop talking and jitters for sure but that is about it. But, I use benzos to come down after a binge and for that they are like a wonder drug. I am talking about after you have been using for a couple days and the comedown is coming on, and you feel all the side effects and know that you are going to feel like complete shit soon. I like to take 2-4 mg xanax and then 2-4 mg klonopin for the long term effect. Meth is a shitty drug though, i hate it, but if it ends up in front of me I will end up doing it. The problem for me is that I can't just get high once and let myself come down. Once I take that first hit/shot, that's it, ill be binging for at least 3-7 days. Sorry, I ended a little off topic but i hope I helped.