I've now owned one of each production week of iPod Touch 16GB units, and wanted to provide a little feedback for all of those out there who are concerned (justifiably) with the various issues. I've put each of these iPods through their paces with a variety of material. Audio recorded with LAME APX MP3 and 1000kbps H.264 Video encoded with Handbrake from original DVDs. There is absolutely no question that week 36 had the worst screen of all the iPod touch units I have owned. The picture of O-Ren that I took (from the movie Kill Bill Volume 1) has made it's way all over the Internets and had something like 100,000 hits last time that I looked. The screen was terrible, with no contrast at all. This was also before 1.1.1 came out... so I can't comment on what effect new firmware might have had on the problem. There was also noticeable hissing on this iPod when a track was paused at a medium volume level. For evaluation I have used some rather high efficiency headphones, such as the Shure E4C ($199) and Shure E500 ($499) models... they certainly offer a deeper insight into audio performance than the stock earbuds. My week 37 iTouch was slightly better than the week 36 unit in screen performance, but still had trouble with black areas in movies. Hissing on this unit actually seemed better than the week 36. My week 38 iPod had a better screen, but annoyingly had a clump of bad pixels (4-5) in a one square inch area right at the bottom middle part of the screen. This caused those bad pixels to show up while watching movies, so it was kind of irritating. This was the iPod I owned when 1.1.1 came out. 1.1.1 did not seem to make a noticeable difference on this screen so I assumed it was one of the "good" ones. Definitely black levels were better, but I still noticed that I got a bit more contrast in dark areas when tilting the iPod up slightly. The week 38 unit also had the most noticeable hissing of all of the units that I've owned. Now (just an hour ago) I got my hand on a week 39 unit. This unit has a different serial number prefix than my previous iPods (instead of 9C7 it has 1B7 as the serial prefix). I swapped this unit out with BB after deciding that it wasn't satisfactory to have the clump of bad pixels and the louder hissing. Thankfully I can report that the week 39 is the best iPod to date, and barring some calamity, will be the one I keep (at least until higher capacity units come along). The screen has a bad pixel, but it's in the middle of the screen where it's almost impossible to see in normal use. Screen looks good but still looks "better" if tilted slightly forward at the bottom. Might have something to do with this being a TN film type screen. Hissing is much less noticeable, more like the week 36 was. I want to make a couple of observations that might help others; 1. Screens vary. There seems to be variation even in week 38 and week 39 units but the variation is minor. The bigger issue here might be contrast ability of the TN type screen being used in the Touch. Numbern of bad pixels seems to vary too. My week 36 and week 37 had no bad pixels, the week 38 had a bunch and the week 39 had one. 2. Hiss varies. The hiss is very possibly related to shielding of the components and there could be assembly variation between units. I can assure people that ALL iTouch units have some hiss... if you can't hear the hiss you are using low efficiency phones or you are deaf. So, good luck, and realize you have to be willing to live with some limitations with these units as there still seems to be some variation... if you are concerned, buy from a place with a good return/exchange warranty. I also believe that at this point in time, there is no such thing as a perfect touch. So... best of luck!