Can any one tell me if a progressive scan dvd play

Now that the question of if its worth it to upgrade to a progressive scan play with a non-HD TV is anwsered. Can any one recommend a reasonably priced switchable player as mentioned by Stehno? Or is that something that is only found on higher priced players? The mentioned sony cost almost as much as my whole system. I try and buy quality at a reasonable price. I concider my system a budget system.It consist of: Yamaha RX-V800 receiver, dbx DX-5CD player, JVC XV-S45GD dvd player, Phillips 36" TV (non-HD) I'll upgrade later, Nakamichi BX-300 cassette deck,Polk R40 mains, Polk RT35i fronts, Polk RT-25i rears, Polk CS-245 center,Polk PSW350 sub.I payed around $1600 for everything, so paying $800 to $1000 for the sony s9000es is a little out of my budget. I'm looking for picture qaulity that won't break the bank. Thanks to any one who can help.

Thanks to everyone for the great input, it has answered my question in regard's to HT, but I must agree with Lazarus28 on seperate HT and audio.I have a strictly audio system in my war room (ex-military) It consist of DBX bx-3 power amp, CX-3 pre amp, a sony 550es tuner, another dbx DX-5 CD player( I love the compression feature on these players) hooked up to four dbx soundfield speakers. I origanly tried to us this as the heart of my HT, but couldn't get the sound effect that I wanted out of it. It was load enough, almost ear bleeding loud if I turned it all the way up, Ijust didn't get the same feeling as if I was sitting in a movie theater. Musicaly the system is almost perfect, regarless of the type of music I play, classic, jazz, rock, alternative, country, I can turn the volume almost all the way up with out any distrotion. (Thats by use of the human ear) I think with better speakers, interconnects, and wire, I'd be able to achieve that crystal clear sound with no distortion at full volume. Thanks again for everyones input.