Hey if i could find a 58" for that price id jump on it too.
Well, a pro calibrated 58" S1 would look better than a V10 without pro cal. Both of them with pro cal would look about identical, or so it said. The combined cost of the S1 + Pro Calibration would actually be less money than the 54" V10 uncalibrated.
Have your cake and eat it: Pay less, get a bigger TV, have superior PQ.
I posted some tidbits on the S1 here:
http://forums.audioholics.com/forums/showpost.php?p=634626&postcount=9
My friend just got an S1, and I sent him that same 7 page PDF on SM offset tweakings. Depending on unit to unit variation, and default setting variation, maybe you can get half way to a pro cal without paying a dime. YMMV.
After pro cal, the only thing the V10 would have over the s1 is that 3:2 is not applied to film. Are you going to even notice? I don't know. Perhaps dependent on the viewing angle. Accurate colors on the other hand should be easily discernible and a pro cal will get you that.