Battery life is somewhat disappointing -- approximately 4 hours (running programs). You get a bit more out of it if you are just reading email or surfing the net. I keep mine plugged in while at my desk on campus so it isnt usually an issue for me.
What I love about the Pro: windows 8, which is kind of made for tablets/touch and much more intuitive once you learn it, portability (very light), can detach the keyboard if you want (there are various keyboards-- I got the kind with actual keys so it is just like typing on a regular keyboard), can use either the stylus OR a mouse (I purchased the bluetooth Microsoft wedge mouse, which is excellent), it learns your handwriting VERY well, you can write directly onto any document/pdf/powerpoint/whatever with precision, highlight, "lasso" and drag things to different places, and use different colored pens/highlighters-- it is just like writing on paper but you can erase and drag things. You can split the screen and look at two documents simultaneously. You can switch between a regular onscreen keyboard, an on screen split keyboard (easier to use your thumbs), or a "write to text" keyboard where you use the stylus and it recognizes your writing to turn it directly into text into a word document, email, etc. It is packed with power. It has a USB in its powercord so you can charge your phone or anything else with it. The load up, shut down is pretty much instant. There are other things I am sure that I am leaving out. I absolutely LOVE it.
Cons: one USB and the HDMI port is one of those small ones (like a mac), I bought a docking station (there is a variety of selections) so it isn't an issue for me anymore; 4 hour or so battery life, which will make it more difficult when I am on rounds and at the hospital.
I don't have many cons to contribute. I am quite biased though because I have never likes Mac products.