[Xperia Tablet Z General] SrAdama:
Just wanted to share why I'll be returning mine after one day of use, for those interested. Not trying to bash the device or anything. First I want to say that it's more an issue with me and my personal preferences than an issue with the tablet, depending on how you want to see it.

1. The screen

I'm not a fan of what I perceived as dull and washed out colors on this device. They aren't as vivid as on my Note 2 for an example. Yes I activated the Bravia Engine and tried it turned off as well. Blacks aren't really black but grey almost. These issues makes the whole screen look poor and boring in my opinion. Especially when playing the same movie on both the Note and XTZ simultaneously.. the difference is huge. There was also some light bleeding around every side of the screen. Mostly noticeable with black colors, which would have been fixed if the black colors were black/turned off and not lit to the point of looking grey. The most important thing for me with a device centered around a screen, like phones, tablets and TV's is of course the screen itself. So for this reason alone it's going back. I tried looking for a fix but couldn't find anything..

You might wonder, "didn't you try it out first before you bought it?". Yes, I did for a couple of minutes and I also watched plenty of video reviews where these issues weren't mentioned or noticeable. But once I got home and tried it in different light conditions and had more time to play around with it, the difference in screen colors was more apparent. Besides I wasn't too worried about having to return it if I didn't like it since I bought it from a store that lets you buy a product, try it out and then decide if you want to keep it or return it, within a month.

2. Battery life

2 hours of watching a movie drained 35% of the battery life. Wi-Fi and all other applications turned off. I wasn't impressed. Not just when watching movies but playing games and browsing the web did the battery drain fast... I had to charge it after 4 hours of use which brings me to the next issue I have with the device..

3. Charging time

I initially thought there was something wrong with mine when I charged it for the first time. After 2 hours of charging the green juice in the battery icon was barely halfway through.. The battery took almost 5-6 hours to charge fully from 0%, the device was turned off while charging btw. I looked this up on forums and yes, according to others the charge time is very slow.

4. Lag

There were some lag and I'm not talking about the minimal lag there usually is with Android devices. But lag that could freeze the device for seconds for no apparent reason. This happened a couple of times, like when using Google Chrome and when I was on the homescreen. I don't know if this is because of the hardware or the combination of Sony + Android software. Point is, it lags too much compared to my Note 2. It felt like my old Note 1...

5. "Water resistant"

I was mainly interested in this device because of its waterproof capability, which to begin with wasn't so impressive. 30 minutes max. submerged in water up to 1 meter down. I was mainly planning on using it in the bathtub after work. But then I read on some forums that some people had issues with water breaking through the tabs or the tabs themselves breaking off. The tabs didn't feel so sturdy/reliable after I had the chance to close and open them up a couple of times. Felt like they would wear out and ultimately let water through. So I didn't really trust that feature..

So, those are the reasons it's going back. I'll look for something else or wait for the right thing for me to be released. Cheers!