When I got a new plasma last year I did a search on avforums.com and found a few tunes posted for the exact model I bought. Supposedly, just using a tune from someone else and another TV isn't good enough, the pros insist tuning must be done for each individual display and environment, but I used one of them anyway and it did make a very noticeable improvement in the picture (Samsung 58" plasma). And some of the couple dozen or so adjustments were surprisingly large, too.
Some of those guys tune displays for a living and have beacoup thousands of dollars invested in tuning equipment (high end tuning equipment is freakish expensive...). Can't hurt to do a search and see if there are any tunes posted for your specific TV's, if they are high end models that have lots of tuning parameters, I bet there will be.
- DAA