Please note that these pros and cons are drawn in relation to the comparison of the two units only. GPSMAP 295 Pros: More portable than Skymap IIIC, can operate from AA batteries Database can be updated by user via PC update cable and computer disk Optional Mapsource CD and storage cartridge allows for alternative uses. For example, Metro CD allows for street level mapping which is very useful for vehicular purposes. Most accessories included as standard items (i.e. remote antenna, mount, PC cable, cigarette adapter, etc.) Split HSI / moving map screen Display fields can be easily changed GPSMAP 295 Cons: 4& diagonal display Horizontal display only= limited viewing area in front of aircraft, inconvenient yoke mount placement Portable use only; cannot be mounted in panel of aircraft; cannot interface with other avionics Skymap IIIC Pros: 5& bright TFT display Can be used as portable GPS or can be mounted in or on panel of aircraft via optional rack/panel mount. This allows for integration of unit to other avionics such as autopilot (via optional interface module). Joystick data entry allows for easy point selections Has outputs to interface with other avionics such as autopilot (with use Avionics Interface Module) and external GPS receivers Provides output for external alarms or annunciators Skymap IIIC Cons: Bulky and somewhat cumbersome compared to GPSMAP 295 Display can be configured vertically or horizontally Can only be operated with external power source such as cigarette adapter in aircraft Database cannot be updated by user via PC. Database cards must be exchanged. In addition, back cover must be removed to change database card No CD option or street level mapping capabilities Display fields are fixed and cannot be changed