There are actually FIVE of the 2007-vintage Samsung 120Hz LCDs which share identical electronics, what is called the "Peony" electronics design. These are:
...which you added to the list in message #96. The missing sets are:
The xx69F models differ from the xx71F models in two respects:
1) The LCD panel finish is matte for the xx69F and shiny for the xx71F's. This is exactly the same relationship as with the xx61F and xx65F 60Hz models.
2) The xx71F models have the speakers located on the sides and the sound exits through the slots between the plastic bezel and the dark plastic strips on the sides. The xx69F models have the speakers relocated to the bottom corners and the sound exits through the slot between the bottom bezel and the single darkened chrome strip across the bottom. Thus the xx71F models are slightly shorter and wider than the xx69F models.
==> There is no 2007 52" model with a matte finish panel.
All the models with "Peony" electronics design share the same FRC (Frame Rate Conversion) board which is where both the 3:2 reverse telecine and the 24Hz to 120Hz frame rate conversion via 5:5 pulldown occurs. The processor used is the well-regarded Micronas FRC 9wxyM chipset:http://www.micronas.com/consumer_pro...ion/index.html
...and that website has a particularly well-done explanation of FRC.
Unfortunately Samsung went to an in-house designed FRC solution for the 2008 120Hz models:
...and I'm not aware of any reviews that confirm proper 24Hz support - in fact C/NET went out of their way to say they could NOT confirm this on the detailed LN-52A650 review.