I think that actually hearing a pair of speakers before buying, ideally in the type and size of venue that you do on a regular basis and full of 300 chattering people is a MUST. In other words, beg, borrow or hire them but use and hear them for yourself in the Environment that they will be working, and well out of the nice, warm comfy showroom. After all, you can't test drive a car properly without taking it out on the road now can you?.
Whether its wood or plastic that gives you audio orgasms

is immaterial, there are good and bad of both types, nothing beats hearing them at a gig, run from your amplifier which is driven from your mixer - after all, thats how they'll be used in the real world when you've parted with your hard earned.