I had considered going the route of a nice midi controller and software, but ultimately when I wake up in the morning and sit down to practice I don't want to be on the computer with the seemingly infinite potential for distraction. I bought a Nord Grand a couple years ago and I'm really glad that I did. The action feels great and the sounds are good enough (although I really would love a new grand piano sample). My teacher even has commented that he's surprised by the dynamics in my touch on his grand at his studio, which in his experience often can get lost when practicing on a digital keyboard.

Anyway, I'd recommend it for anyone that's at that point of taking their practice seriously, but might not have the space/neighbors for an acoustic piano.