Phone over RCN?

I'm kinda old school, in that I like having a landline phone in the house, especially because I've had bad luck with cell phone reception in my last two places. But since we're moving in a couple weeks I thought it might be a good time to move the landline number off of AT&T (née SBC) and lump it in with our RCN service to get bundle pricing and save a little money. So I wanted to see if any of our Chicago peeps had any good or bad experiences with the quality of RCN phone service?