Which is the best Hz when view 24p on Blu-ray?

[luscious]

Be careful when buying 120Hz/240Hz LCDs. The true 120Hz and true 240Hz offer the best picture since they eliminate judder (PAL btw has no judder but the audio is sped up, ruining all the music) and properly implemented interpolation will be awesome when it comes. There is already interpolation done by your TV or player when it upscales standard definition content. Some upscaling interpolation doesn't get implemented well, but everyone knows it is a good thing in principle (and great on high end Sony sets and the customizable PS3)

Examples of consumer confusion.

Toshiba does not make true 240Hz sets. Neither does LG. What they do is use 240Hz backlight scanning ... and there's a good explanation of this in an LG ad in the latest Sound and Vision ... LG admits that all it is doing is interspersing blank frames (turning the backlight off for an instant) with the true frames ... this is supposed to encourage your own eyes to do biological interpolation ... nice theory but I think it's bonkers.

Samsung and Sony are the only ones I know of that make true 240Hz. I think there's a rumor that Vizio may eventually make them too.

PS I don't know too much about plasma since I hate plasmas but if those frame rates are accurate then nothing on plasma can match a true 120Hz or true 240Hz LCD. 96Hz frame rate for example would eliminate judder for 24p blu-ray sources but for 60p or 30p sources (from things shot on video or from a video game, etc.) -- judder would be introduced (for DVDs of movies it also kind of matters -- the DVDs won't be in 24p like the film so they introduce judder at the DVD source -- but then the 96Hz frame rate will effectively introduce even more judder unless the TV is able to calculate the original frames from the judder-infested DVD ... which I doubt tvs do).

240Hz is also not perfect. Perfect would be 600Hz since then all frame rate sources would not have any judder added to them by the TV. For video games, the higher the better since video game frame rates are variable unless you have them v-sync