I purchased this tv 2 weeks ago and love it. I picked it up at the local Sears store for $1099 on closeout. To be honest, compared to the Samsung, Hitachi, Philips and Panasonics, I would have had to spend over $400 more to get a comparable picture.
Yes the system does have screen shift and it can be set to "off, mild, or strong".
I do have two issues with the unit.
1) (Resolved) The unit would not work when using the HDMI from the satellite. This turned out to be an issue with the receiver and was corrected by swapping to a newer version.
2) The brightness control seems somewhat limited and I would prefer if it went higher.
Hope this helps.