But can you actually go to a typical engineering class and use any of those devices an writing like you would do with pen and paper?
I ask this because every time I try a note in Store the small lag between the input and the actual action drives me nuts.
I never tried and iPad and a pen before but I believe that since it doesn't have a wacom it is close to useless.
I haven't seen an input lag with Wacom or N Trig and I've used both to extensively take notes at my CE seminars, constant 8 hours at a time note taking, diagrams, PDF mark up, etc. In theory the Wacom hardware is better, supposedly Ntrig has a tiny bit of hover lag (gahhh no more lag discussions!!) but in practice I personally haven't noticed it. I believe it might affect an artist who specifically is drawing long, sweeping curved lines. The other issue with Ntrig is the pressure sensitivity is too low, so you have to press a bit harder than the Wacom, but at the same time the Ntrig has more levels of sensitivity. With that said Ntrig has promised new drivers along with hover lag fix and a way to adjust the pressure sensitivity, this is supposed to be released in October. There have already been updates to Ntrig that have helped function, but the one that truly matters will be the October update.
I'm not sure what engineering notes would look like, but I'd assume you would be writing a lot of diagrams, formulas, measurements, etc. IMO either would work super nicely for this. OneNote also calculates mathematical formulas and is quite powerful as a note taking device, much more so on the windows platform than on android. The instant sync is amazing, I have my notes instantly on every platform, home, work, phone, etc. You can search your handwritten notes, that in of itself is amazing. Embedding pictures, video, lecture audio, etc.
In any event I'd say the answer to your question would be yes. Personally I think Wacom would be a slightly better choice until October, then things may even out.