I use Voyager 5 on my Psion Revo, only really use tidal data which is OK. However if you want to get info in the future its a bit long winded, ie you have to change mode from auto and then alter date. Then you have to remember to put it back to Auto again. Tried the waypoint directory and getting bearings between waypoints etc but find it all a bit of a waste and much easier to use GPS for same function.
All in all ok for the money, but I may not be using it to its full potential ie just tides.