Poly is overrated IMHO. Its actually heavier than a steel blade due to the frame needed to support it, and more expensive to buy. I run 8' steel Boss blades on my 05 and 06. Most the trucks I plow with run 9' steel Fisher blades. None of the guys I run with would use a poly blade, and none of them have meyers.
For plowing roads I would not reccommend Meyers. We used them when we plowed commercially, but for plowing roads I use Boss. I would have gone to Fisher, but im not a fan of trip edge, and my local guy doesnt stock parts for Fisher. Before your department buys plows talk to some of the other departments and find out what they run. The township takes 10-15 minutes to hang a plow, I can have mine on in less than 5. Depending on what Meyers mount you go with our old plows were a PITA.