I have heard from several people that the OneTouch reads higher (@Sam has a lot of experience with their meters, I believe?). I use a ReliOn Prime, though I haven’t compared it to many others (to my free OneTouch a couple of times; and the OneTouch read higher), and I just started using the Blu, and they’re spot on with each other (and line up with my Libre sensor as well).
@Eric put together this post with some links to studies done on accuracy of various meters you might want to check out to see how your OneTouch rated.