Sorry to necro this, but I just picked up OBDlink MX and right now I'm going to Bluetooth to my Windows 7 laptop for starters. My question is, I'm going to pick up a dedicated tablet,at work Hyundai and Kia has recently gone to a Samsung Android tablet connecting via hotspot. As far as data transfer and refresh rates, is there a huge difference between a hotspot and Bluetooth performance? Android vs Windows? Also, what kind of storage capacity should I look for (32GB, 64GB, etc)