This is my "make or break" application on any tablet, as I am so addicted to having searchable digital notes, available anywhere. I had two concerns about the Series 7 in this regard, neither of which was as bad as I'd feared.
The first concern I had was the screen size and proportions. As most people know, this is a WIDE tablet, 16:9 aspect ratio with what I would consider a rather stupid resolution of 1366x768. This is a serious step down from the beautiful screen on my LE1700, with an almost perfect 8.5x11 piece of paper aspect ration and 1400x1050 resolution. There are a lot of things I dislike about the iPad, but I will say that the 4:3 aspect screens are far better for portrait mode than widescreen, and I really do think Microsoft dropped the ball by making 16:9 or 16:10 the official spec for Windows 8. That said, this thing is also 2/3 the size of My LE1700 in all dimensions, including weight. The screen viewing angles and brightness are even better than Motion's ViewAnywhere display, and it's really a joy to use, so I'm willing to cut them a little bit of slack.
I use OneNote in Portrait mode, and I used to have 1050 pixels of width to carry the notebook menu, current notes and page menu. But in the end, my actual writing width fits easily inside the boundaries of the Samsung. Basically what I do is use the normal view for navigation and then use OneNote's full screen view for note taking, which strips off most of the crap and leaves you with just a notebook. I found it very easy to get used to this, and by the time the first meeting was halfway over, I was perfectly comfortable with the Samsung, even with the aspect ratio.
I also LOVE the way the OneNote team implemented touch. They perfectly understand that pens are for writing and touch is for navigation, so instead of what I had feared, where touching the page would draw a line, instead the pen does all of the note taking and my fingers let me scroll up and down as needed. Other than the occasional palm rejection issue (I need to train myself to always put the stylus tip close to the screen before resting my palm) I found the experience to be very satisfying.
The pressure sensitivity works fine with the built-in drivers, and the eraser works well too. Even better, I have yet to experience the annoying lag that was happening more and more often in Windows 7, where flipping to the eraser would occasionally take a few seconds to "stick" and I'd end up drawing lines with the eraser before it started erasing.
Really the only thing that I'm going to need to get used to on this device is the screen. My LE1700 has a nice matte, somewhat grainy screen protector, which is a very different feel than the slick glass of the Samsung. It helped a bit to swap stylus tips for a felt tip (sadly not included with the tablet, but you can get them from Wacom) but it's still a bit of a different feel than I'm used to. I don't think it's something that will bother my long term however.