I like my real PDP better than the emulated one. The real one has one feature that E11, and Supnik 2.2, and all the rest can NEVER have that annoys my family to no end - THE EAR-SPLITTING NOISE! :) It drives them Nuts, and I can't get enough of it! There's nothing like powering up the 11/23 and hearing that "Bwaaaaa!" as it all spins up - then it becomes a gentle roar (I don't have a rack or case of it, so it sits out on a table). Everyone leaves, and I'm free to hack alone. Not to mention the emotional satisfaction that you own a piece of history - No matter how big or inefficient the piece! Which was the primary reason I went out of my way to get one. And the reason I kept my CoCo, and my C64.