I'd rather have a Mac Pro than an iPad, but it isn't terribly portable, and I doubt the battery life would be very good
I think you pick the device that best fits your situation, and if you are on a college campus most of the time with wifi, free internet, and probably plenty of outlets, then you may not need an iPad so much.
Then again, it is kind of nice to digitize all your books, take your iPad to campus, and be able to comfortably read (portrait mode), type (I carry a Bluetooth keyboard), and handwrite all with a single device!
This is why I bought a regular iPad instead of the LTE version since every where on campus there is wifi.