I previously had the overdrive a couple years ago but got rid of it because I decided to go with the hotspot service on my Galaxy S2, but that was a mistake. The hotspot service on the phones are horrible. So recently decided to go back to a dedicated hotspot service and decided to go with the Tri-Fi hotspot. It works great and provides reasonable speeds depending on your location. Its a little bulky compared to other hotspot devices I've seen but the bulkiness is because of the larger battery so it makes up for it. The LCD screen shows valuable information at the touch of the button like how much data has been used, etc. It automatically searches for the best possible connection (3g, Wimax, or LTE). It does get annoying when it does this because it disconnects you for a moment, however this feature can be turned off or set to only connect to one type of connection. LTE is no yet available in my area (CA) and who knows when we'll get it out here so can't comment on that.
Overall recommended, but if your in search of LTE now you'll need to go elsewhere.