[FYI/FWIW: I work for Philips Semiconductors. We make chips for DVDs, our parent company Philips own patents on DVD systems and sells DVD players, and several DVD system engineers are 3 or for cubicles down from me, along with the local DVD lab.]
The cheaper DVD players can't always handle complex DVDs (scene selection, deep menus, etc.)
I bought an Apex 1200 $60 cheapie for my cousin's kid (which makes him a cousin too). Brought it to our DVD lab - we were able to 'crash' it in just a few minutes. Plus, it wouldn't recognize certain audio disks it was supposed to, etc. The tray didn't lock during play, and the player - when tilted - would let the tray slide out while playing!
I have an Apex 600 (?) at home. It is OK, but with a few quirks (remote can't always turn it back on after turning it off), and a power supply that's a bit flaky (out of balance DVDs w/painted logos overtax the pwr supply a bit
and cause tracking errors. Prob a few software bugs I haven't encountered because I don't watch fancy DVDs (Fight Club, I hear, is a good test).
So pay a few dollars more and get a name brand.
I'd of course recommend Philips, but Sony, RCA, Matsushita/Panasonic, and even Samsung are all good.
BTW: you can sometimes find basic Philips DVDs down to the $100 area on sale. After turning back in the Apex at Fry's, I got a nice Philips for $129 - after my employee rebate it'll be around $100.
You get what you pay for. While all DVDs prob use chipsets from one of a half-dozen different vendors, internal firmware (software) quality is quite variable, as well as mechanical quality of the "loader" (physical DVD drive mechanism). Paying a few extra $$ gets you a better quality mechanism, power supply, etc.
Bill Wiese
San Mateo, CA