The Pharos hardware is great; fast, accurate, flexible (CF, Bluetooth, cabled), compact.
The Ostia software is great; easy to use (love the \"Home\" and \"Auto Re-route\" features), fast, intuitive (after reading the manual to understand the icons).
The Map data… well that is a different story. It is old and inaccurate (missing highways and major streets that have been in place for 5+ years; and yes, I did download their “latest” maps via “Smart Maps”).
Bottom line is I do not trust their maps to get me to where I want to go in a city I do not know. I’ll just use the Pharos hardware with Pocket Streets & Trips or Mapopolis.
So my advice is to just buy their hardware w/o Ostia and get another Navigation Application with reliable map data.