When it comes to choosing the right Airplane GPS you will need to spend some time on doing some research online to find the best among them. You can visit any of the forums related to GPS where they would have discussed and shared their views and ideas about GPS and that too Airplane GPS in particular. There you will get all the information you would need to know about GPS.
But one of the best among Aviation GPS would be the Garmin 296. This is one of the best among the portable aviation GPS that was introduced by Garmin. This is one of the fastest GPS where you can transfer data at a fast rate and has a great battery life which many other GPS lag.
Garmin 296 GPS also has the special feature of finding terrain as well as obstacle information using the tone alerts and visual ideas.
Garmin 296 also has the feature of showing you the realistic topography. You can also switch from marine to automotive modes and vice versa in Garmin 296 GPS. Making it the ideal portal GPS you will ever need for your air, road, and sea travel. This is also relatively cheaper GPS available in the market now.