The Matt Shearer pipe isn't huge.  There are a few pics around the forums.  A lot of people run his 250 pipe.  The FTZ is massive, but the last dyno i saw makes a little more power throughout the curve.

With Shearer's pipe, you'll lose a tad down low but it completely blows FMF away mid through top end.  And it revs to the moon.

Edit:

Here is a pic

http://www.suzukiquadracerhq.com/index.php?action=dlattach;topic=4220.0;attach=8520