On the downloader front I use one of these:
rhaonline.co.uk/digital-tach … -009-.html
Though I got mine from the FTA not the RHA. It does unit and driver card, it runs off a couple of AAA batteries and has done me 10 months without problems. Its also good if you use shared user yards, because you can chuck it in a Really Useful Box with your name on it and it won’t end up downloading half of the rest of the yard. As will the one above. The ones that use mobile phones to upload for you are good but they have to be left out and plugged in. My yard has three of them for different companies and its not often we get a week where company a doesn’t get company B’s driver.