I have both the aluminum "No Batteries Needed" model and the electronic.
Pros, and cons .....
Aluminum
Pro- Fits nicely in the trifold kneeboard pocket
Pro- Easy to use, lightweight etc.
Pro- can be worn around the neck on a lanyard.
Con- Difficult to read the small print on the "NBN" model.
Con- sometimes need two hands to operate.
Electronic
Pro- easy to use, carry, etc.
Pro- Fits in flightbag, (there is a kneeboard model available)
Pro- Can be operated with one hand
Con- Difficult to see the LCD in some lighting conditions.
.......Even with "good" batteries.
Con- Needs those extra small "AAA" batteries
Hmmm....... Just went to see if batteries were OK.........
NOPE! ......Need new ones!
I think they're just about equal, carry both, and feel comfortable with either.
Uh huh! I'm sure that helps alot....
Sorry...