Todd, What is your reasoning for wanting a polymer lower? Price? Availability (maybe you have a local source)? Novelty?
If it's price, I'd suggest picking up a Palmetto State blemished lower. I have one in transit to me right now. They sell for $59.99, so the price is right, and the reviews are very good. Most people can't find the reason they are marked "blemished".
The reviews I've heard/read about the polymer lowers are favorable, but if you can get an aluminum lower for close to the same price, why not go that route?
Knowing you, I doubt your reason is for the novelty, so I just won't address that...
[This message has been edited by AgEng06 (edited 11/12/2012 5:01p).]