Well, its been 7 days now that I have got and used the S3 (4GB/ 128GB). As per original intent, I have used the S3 heavily as a digital notebook (OneNote mainly) and a means to access my digital reference library (PDF/ ePub) and online reference materials (IE - MUI and Desktop). I have not yet installed Office 365 on it but will do so soon. And, as a background, a 4GB/ 128GB, i5, SP3 Pro is my main machine.
Weight: The S3 is light...well, lets say, not heavy or awkward. I am comparing it with the SP3, iPad Air with magnetic cover + soft plastic backcover by Speck. It is lighter than the SP3 - noticeably; And, in my opinion is comparable with the iPad kitted out as above. It is less awkward to use than the Dell Venue 8 Pro which I also have. And the stylus experience on the S3 is infinitely better than on the DV8P.
Battery life: I take the S3 off the charger in the morning (say, around 9AM) and by late evening (say, around mid-night) the battery icon shows me that I have about 35-40% battery left. Brightness is at 37% when on battery. But my use of the device though intensive is also very light. So, I am not very sanguine about the battery-life though - I wish it were better.
Charging issue: I have read some horror stories about the charging issue. I am ambivalent about this whole USB charging thing. I wish they had made the charging port the same as their other Surface devices and if USB charging was something that MS was hell bent on providing, then it should have been an additional capability and not the only means to charge the device. But I charge the S3 every night and when I take it off the charger, it shows 100%. I am using the charging unit and cable that came with the device.
My main question: Can the S3 replace my iPad Air?
In terms of functionality, yes - absolutely! Having the S3 is like a dream device - I am not saying that S3 is a dream device - it still is quite rough-edged in some ways.
But as always, the app experience is a problem and I am hoping that with Win10, this will change and only for the better. Want an example? I read a lot of PDF and ePub texts. On the iPad, I use PDF Expert for PDF and iBooks for ePub. And, I think they are excellent. Rarely, if ever, have they crashed. They are simply excellent. On the S3, I use DrawBoard PDF and BookViser. Both are good no doubt (I use them, after all!), but to be honest, they are not as slick as their iPad counterparts. But, I am not unhappy with what is available currently on the S3.
Will I keep it or return it? I don't know yet!