These things are awesome! It's got WAAS, will track better than pretty much any other GPS out there. I've got one, I'm not sure if it's the HVS version. I've got a serial version, never have any problems with hibernation. I purchased an RS-232 to RJ-45 plug and put the pins to the right locations, and I'm powering it out of my OPUS supply. It's under the dash and I don't have any problems with it there, ti's pretty big though, so make sure you've got the room for it.