Just play around each server and see what you like, its all free so test as many servers as you want and pick what type of custom (or non-custom) play you like. I've been around the emulator for a few years (contrary to what my join date says) and the best way is to find out yourself how you like the server. Though its not a bad idea to listen to some reviews of the other posters
Also having different clients (i.e Titanium vs. SoF+) can affect your choice because while some servers have content in post titanium zones, others only use titanium zones for their server.
P.S. EZ from what I hear stands for Enhanced Zones and does not mean easy.