I too returned my SP3 at literally the last hour (one hour before the MS store closed on my last return date). It was a tough decision. I was coming from the original Surface RT and I often get returner's remorse every time my RT lags (which if you own the RT happens pretty much all the time). SP3 is the device that makes Windows 8 shine and it is a glimpse into what computing will be in the post-mobile OS tablet era (too soon?).
I
really liked the SP3, but I didn't like the heat (why did they place the hottest components where you hold the thing?!?), the fan noise to a certain degree, battery life, and the software isn't quiet where it needs to be in tablet mode (e.g. there are a very limited number of steam games with touch control, stream streaming at home doesn't support touch, Office isn't fully touch). It is important to note that for my usage I valued the tablet portion more than the laptop portion (Office and Steam are my only legacy programs). When I weighed the cost of the device and the likelihood these issues will be fixed or further minimized in the next version, I pulled the trigger and decided to wait. After all, I still have my Surface RT and desktop to help tide me over and it does all the things the SP3 did except run my Steam games.
In the meantime I am going to be testing my patience every time I use my RT*.
*or maybe I will just repurchase the Sp3
.
