Panasonic S60 PQ

and the flickering is hardly noticeble on the S60. I do go by reviews, changing brands, since I don't notice it at all on Samsung plasmas. Can't say why. I just wanna know how "bad" those sets compering to the ST60.

In your case, you must eyeball each set.

We know to dismiss any Smart TV feature or apps. Oh, we didn't cover that did we? Smart TVs have issues from downright crappy browsers to spying on us.
Bob

There's certainly no good way to meter it authoritatively for the next person. Understand, where I saw the S60 & ST60 are in different viewing spaces than yours, and w/ different content/hardware inputs/settings. I have no regrets buying the F5300 for a second dark viewing space, since it met all of my needs.

That said, the ST60 is the horse to beat solely for PQ. Your issue is perception of the flickering, which overshadows the PQ issue, subjective enough on its own(!)

but it's really hard to find those sets on display next to each other those days, since it's all LED in stores. I should have looked at it last year. to late now. So, my question is how is the overall perfomance of the S60: black level, coulors and motion- since it doesn't support 1080P/24, compering to the ST60, by your own experience.

but they both are really hard to find in stores those days. My question is: how is the S60 overall peformance in black level and motion since it doesn't support 1080p/24 compering to the ST60 by your own experience.

Much of what is perceived is subjective. Most people don't notice the flickering issue that you do. In a dark room the F5300 was perfectly acceptable, but for some, not enough to make it worthwhile vs an ST60. For me the S60 wasn't worth $400 more PQ-wise, but it's subjective.