Thinking of updating my Psion (which is mainly used for contacts/diary), and having a PDA with GPS built into it appeals (as I do a fair bit of driving). Seen various individual comments about Navman PIN, Mitac and Garmin iQUE, but nothing comparing them against each other. I gather the Navman is a 'brand name' version of the Mitac (which I've seen going for very reasonable prices - it is about to be replaced?), but that's about it. Any advise at all will be appreciated.