i got L47E5 for 620 from EPP only diff from E50 is that its 60hz vs 120hz any takes on that?
The only benefit of 120Hz in and of itself is that you don't have to do 3:2 pull-down to display 1080/24p content. At least that used to be the case. Good 60Hz TVs should look almost identical to your eye.
Plasma is like 600Hz, so it's a non-issue there. Only LCD/LED will you notice the difference.