I vote no for dsp's except:

A six-axis or logic 7 type dsp. I will not buy a preamp that does not have this. I listen to six-axis for all formats and even prefer it to DTS or AC3 for some material especially music dvd's. I have not heard PL 2 so I can't comment on it.

Please Please Please include logic 7 or six-axis type surround. Thanks