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
Thank you for your kind responses. Looks like the DEQ2496 is far more than just an RTA. Presumably, I can use the tuned microphone from my Velodyne DD12 with the DEQ. Thanks again for your assistance.
If you have an android phone, there is a free app to do this. Its not as accurate of course, but its free, and you can get an idea of where your room is.

John C.
Thanks Kal

Didn't find R&D
TEF looks very competent but, being hardware based, is also expensive.
Led me to Smaart v7, ($895) which is closer to what I imagined.