SONY vs. Samsung Flat Screen ?

[affiatati7]

I am in the process of making a decision to buy a 52" or 57" LCD flat screen. I was either going to go with the SONY 52" XBR5 or the Samsung LN-T5781F. I know the screen size difference. I'm not sure if I should wait and get the new '08 models coming soon. A few questions:

1- From my research of the new '08 models, soon to be released, I don't see a second generation LN-T5781F. Does anyone know if Samsung is continuing the 81 series (especially 57" model)? Would this Tv come out later in the year?

2- Neither SONY or Samsung seem to be coming out with a 55" to 60" Flat Screen for '08. Has anyone heard otherwise?

3- Even though the LN-T5781F does not have 120 Hz technology, how does it handle motion blur such in fast action movies or PC video games?

4- What is the real difference in Samsungs Series 6 & 7 and Sony's Z, W, V, XRB 6 series compared to present models?

5- Is it worth the wait?

Thank you.