BP is cheaper than all of those and IME works pretty flawlessly. Perhaps I've just been lucky.Don't go near BP - it's way over-priced and they only work half the time. I have the Apps ready and set up for Geniepoint, Instavolt and PodPoint (but usually use Tesla if I can). I think Shell is supposed to be OK as well, but I've never used. I have had to use, but try and avoid, Electric Highway and CYC.