How much better is a 1/2 wave antenna to a 1/4 wave antenna?

Question:

Or would I be better off getting a cheaper, but higher dbi antenna like the one found here. http://www.8starshop.com/en/24g-16dbi-sma-female-wifi-lan-omni-antenna-for-router.html

Answers:

The 1/4 wave antenna is superior. Half wave antennas do not radiate well because of the lobe location. 5/8 wave vertical antennas radiate well and have a higher field angle. The 1/4 wave has a low field angle. If you want to communicate through a mountain-top repeater, the 5/8 wave is the best. If you want to communicate horizontally close to the ground, like from car to car, the 1/4 wave wins.

In general, the higher dB gain an antenna has the better it will be.