I've been using a tablet for my lectures and I absolutely love it!!! It has never been easier taking notes. The only thing I have to bring with me to lectures is the computer...bo binders, notebooks, pens, pencils, folders. etc. You can either take notes directly on the powerpoint slide, or you can use a program called Microsoft OneNote, which is amazing. It is extremely organized and flexible, and makes finding info much easier than a notebook b/c it is searchable. So when you're studying and can across something you can't remember, all you do is type in the word and OneNote will bring you to any part of your notes that contains that specific word. You can also tag definitions, important items, etc and search for those as well. All of your powerpoint slides, docs, pdf's, etc. can be put into OneNote so you can take notes and highlight on those as well. Plus, it automatically saves every 30 seconds (something you can't do in powerpoint) as well and setup automatic backup saving to the same hard drive, a flash/jump drive, external hard drive, etc.
Writing on the tablet is very simple...just like regular pen and paper. You can draw anything you want and organize any way you want as well. I would HIGHLY, HIGHLY recommend getting a tablet b/c it makes things so easy. We use a Gateway model, which is really nice. The only complaint I have is that it is a bit heavy, but luckily we're not holding them.....yet. I can tell you, without a doubt, that you will not regret getting a tablet. Make sure you get high specs on the computer, an extended replacement warranty, a large flash/jump drive for backing up, as well as an external hard drive. You want a couple of things to back up with in case something goes wrong.....you don't wanna lose your notes. Plus, I would grab a couple of extra stylus pens as well, just in case you lose one or it breaks. Better safe than sorry. Yeah, it is expensive, but it is worth every penny and will pay itself off very quickly.