Did you employ the Low Cut Filter Switch on the AT? Might help.
Before the pros here can respond they need to know how you plan to use the mike?
Different pick-up patterns are designed for different applications.
How will it be mounted/powered? IOW what cam/mixer/mount?
Read the first review here:
http://www.bhphotovideo.com/c/product/300615-REG/Audio_Technica_AT897_AT897...
I think it's a good summary.
MacPro4,1 2.66GHz 8 core 12gigs of ram. GPU: Nvidia Geoforce GT120 with Vram 512. OS X 10.6.x; Camcorders: Panasonic AG-HPX170, Sony Z7U, Canon HV30/40, Sony vx2000/PD170; FCP 6 certified; write professionally for a variety of media; teach video production in L.A.