Yes i did switch to cinema smooth, but i honestly cant tell a big difference. I only watched man on fire too which has crazy camera shots and colors, and is purposely gritty in many scenes. less than optimal for trying to tweak ur set with BTW. Cinema smooth is also only available while watching 1080p content. In that thread, some rave about the pop they saw after, and some cant see it, like myself, so it may benefit you to try it. They said something about a glitch in cinema smooth that it just doesnt work for every set. you never know til u try.
Take into account that my tv has about 190 hrs on it so im still "breaking it in". watching everything full screen and setting lower than normal etc.
I am still messing with settings regularly, but only when watching blu ray. no point in calibrating a blu ray then switching to standard definition and trying to make that look good. what i found seem to look the best so far are as follows.....(off the top of my head, im at work)
Movie or standard mode
cell light 8 or 9
contrast mid 70s
color mid 50s
brightness mid 50s
sharpness 20
color warm2
gamma -1 or -2
digital nr off
blacks dark
native contrast off
edge enhancement switch back and forth but cant really see a difference
cant remember any more, but i get a rather realistic, clear picture with these settings, and i still play with them daily. No lcd pop, but nice pic none the less. Also i think the 18 inch size difference makes a difference in the detail from the lcd to plasma. Another note, the b550 series is closer to the bottom of the line samsung plasma, and i dont know about you but i paid approx $1600 for it (with 4yr extended warranty), so theres possibility that the tv just isnt capable of what you are expecting of it. I think this is a great value set for the size and the picture i have seen thus far, but there are many models above this one that prob still wont give you the lcd look that seems to be your taste. dont get me wrong the led lcd samsung 8000 my dads got has prob the most amazing pictures ive seen, and all he did was take it out the box, hang it, and watch it. You could also buy 3 of our tvs for what he paid. electronically, i think you get what you pay for, and I think i got more than $1600 worth of pic quality and screen size, but different strokes for different folks, and this just may not be the tv you were hoping for, being that u favor the lcd look.
Damn that went a lot longer than i thought. Last thing tho, i got the spears and munsil calibration dvd, and it deffinately set me in the right direction for settings. Once i hit 300+ hrs ill do it again and see if anything changes. feel free to ask if i can help with anything else.