Originally Posted by TagsDad
"The 745 is a rare creature in TV land: a step-up model that actually has worse picture quality." http://reviews.cnet.com/flat-panel-t...=latestReviews
"Compared with the entry-level 640U, the main step-up on the 745U reviewed here is 3D and an improved Smart TV suite. Meanwhile the yet more expensive 847U gets the extra yellow pixel of Quattron, which in past reviews did nothing to improve picture quality, and a 240Hz refresh rate. Given these differences, spending more for the 847 doesn't seem worthwhile. Note that unlike last year, the 70-inch Sharps for 2012 are all edge-lit, not full-array."
Basically he says save your money, skip the 3D and get the 640u model. I do hope they do a full review of the 847u soon, but this review gives me pause since it is not at all what I'm hearing from the folks on this forum.
Thanks for this review and link. I in fact looked side by side between the 640U, 745U and 847U. Here are my findings. His review is mostly accurate. I would say that the 847U is better in color, black levels and gamma, plus judder than the 640 and 745. The 640 does look better than the 745. The 847U looks better than the 640 and 745. They should of skipped the 745 model. Actually, if you ask Sharp, they sell more 640's and 847's then the 745. For $200.00 getting the 847U is worth it.
Another thing, I tested out the 8470U made specifically for Costco and Sam's. The 8470U blows all these sets away. Believe it or not, the 8470U has better blacks, no clouding at all on the sets from Costco and Sam's. Per Sharp these sets are made for these merchants. Another thing, per my post many pages back, the 847 series has a different chip set than the 640 and 745's. I talked to a tier 3 Sharp engineer and he stated to me that these are the second generation chips that will also be installed in their 2013 models as well. It is an upgraded EEPROM chip, with several other chips that work like a CPU in a computer. Total of 11 chips were upgraded. The firmware is also different in these. These chips are only installed in the 847 and 8470U models.
Another thing, as I noticed that you have more features and adjustments with the 847 series than with the 640 and 745. I spent months testing these units out before I bought. Costco is the way to do becuase you not only get another year of
warranty, but you get two 3D rechargable glasses, which is over $100.00 for the pair.
If you are totally serious about your TV and a die hard like me, please test them all out. Costco has all three, but the lighting in costco is very hard to deal with since it is a warehouse lighting, so it doesnt give you a true color depth viewing, but you will see the clouding in the 640 and 745.
Go to a Magnolia store and check out the 745 and 847. Since the 640 is an older
model, but the store standards, most stores might not carry them anymore.
I am glad that I paid extra for a better TV, with double the warranty and for 2 pair of 3D rechargable glasses.
CNET does have good reviews, but since they didnt do a review on the 847 or 8470U, dont run off and get the 640 because of this review unless if money is tight. The 3D on these sets are awesome!! 640 no go!!
Please do your own due diligence to see what you think.