I don't do much e-zine adveting these days, but when I did, I had good success just by going to various different e-zine directories that I'd find from searching on Google.com , then I'd just paruse the directories until I found e-zines that seemed good.
I tracked the e-zine and their results etc in NotePad.
How to make a Genuine Profit while helping others...
http://www.genuineprofit.com