Real time analyzer


After reading Jim Smith's Get Better Sound I am considering purchasing a real time analyzer that can measure on at least a 1/3 octave scale. I would like to spend less than $400. I have seen several PC based systems that fall within my price range. Also, the Samson D-1500 falls within my price range. I would appreciate your guidance and recommendations on this topic.

Thanks.
papajoe
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Generally, it's not the software, but the quality of the microphone that can introduce variables.

Ideally, the mic could be a condenser omni, calibrated to the system.

Never a dynamic cardiod, as is found in the Radio Shack meters.
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I know this response is a little late but I use a Behringer Ultracurve Pro (under $300) and a calibrated mic ($50 from your local Guitar Center). I use this unit for speaker building measurments, Audio system setup, PA system control when I gig, recording, and final mixdowns. Incredibly flexible piece of gear.