So I probably should have asked the GME lady these questions, but I only thought of them as I was driving home last night... so hopefully someone else might be able to answer them

If I have 2 antennas with the same dB gain but different lengths/heights, whats the difference?

The difference between the fibreglass antennas and the thinner flexible antennas is purely strength for different driving conditions e.g. corrugations or tree branchs, etc, and both types have pros and cons over each other- correct?

And what are 'unity gain' antennas?