interlaced vs progressive
Interlaced scanning paints all of the odd lines of the picture in 1/60 second followed by all the even lines in the next 1/60 second for a full frame in 1/30 second.
Progessive scan paints all of the lines sequentially, one after the other, in 1/30 second.
With moving objects, interlaced scanning may show ghosting where part of the object appears to be in two places at once if the object happens to move in the time between painting the odd lines and the even lines. Progressive scan usually can eliminate that, but there are other factors and it is not necessarily always perfect either.
Given the choice, you really want progressive scan but it may depend on the type of tv to which you hook it up. The processing of converting from interlaced to progressive scan ("deinterlacing") may be done better by your tv than the dvd player, in which case you would want to leave the player in interlaced mode and let the tv do the deinterlacing. With digital tvs that must scale the image to their native resolution anyway, usually you are better off sending it a progressive signal.
For $40, you should probably get the Mitsui player so you can at least try interlaced vs progressive and see which produces the best picture to your eyes.
