I just put on MF 12289 3" inlet and outlet, and it has a nice rumble on start up, with very nice sound at WOT. My wife didn't think I change it. It is not to obnoxious under normal acceleration. I finally took it on a trip and drove 55-60 due to snow and didn't notice any drone. I kept the factory pipe and resonator.
I purchased locally, but I found it at many online stores for $100 which is a far better price than I paid. Just do a search online for Magnaflow 12289, and you will be able to find them for $100. I didn't do much research before I purchased mine, and since everybody else in town wanted to put Flowmaster on, I went to them. I don't really like the FM sound.