Stock or FMF fatty on KX310 : Rich?

Hi. I have a KX310 done by Eric. I highly recommend this mod for anyone with a KX250 - trails or MX!

I've been thinking about "trying" the FMF Fatty since I heard that it's recommended for big bores. I hate to throw away $200 if I don't like it as much as stock or can't tell a difference.

I don't want to bother Eric since I know he's a very busy man. Rich or anyone else: do you know what difference the fatty would make to the powerband compared to stock?

Follow-up question: If the fatty is recommended, should I get the powercore II also or stick with the stock silencer?

Thanks! Mark

Thanks for the response! I'll probably get the pipe and if I don't like it for some reason I should be able to sell it to get back some of my money.

I was looking at the Titanium 2 silencer - which appears to be like the powercore 2. I'm guessing the powercore 2 will be similar to stock. Any idea how the shorty will affect the powerband? Specifically, will it sign-off earlier or later?

Okay. Thanks a lot.