not if you only watch silent films.
imo, there are bigger differences in dvd players as transports for the audio bitstream...whether 2-channel music or 5.1 soundtracks. to get audiophile quality audio in an interlaced machine, you are looking at a much higher budget. but the difference are more than subtle, depending on your associated audio equipment.
i just went through this exercise. i have a runco vx-1c with outboard scaler, so wanted a good interlaced signal. i found a lot of good threads in the DVD Hardware forum. the one thing i have learned from my audio days, is that the source matters greatly....also digital is not digital.
i ended up with the proceed PMDT...(somewhat controversial because of some software glitches). the sound quality...going into my proceed AVP processor blew away my old Sony 7700 DVD...a supposed "reference" piece.
as far as video quality, i was blown away. blacks were enhance greatly, as was color saturation. 3-D effect was noticably enhanced. frankly i was a little surprised at how much better an image that something in the PMDT league can produce. actually not surprised...stunned.
for someone spending $13k for a great pj, don't choke it with an average dvd player. ask your local highend dealer to let you demo a PMDT (or an Ayre DX1, or a Meridian) to see just how much better an image your pj is capable of.