Cant really think of any atm...but thats cause the origin comes with REALLY nice stock parts
Little bit of an air hog
Some ppl may find it a little loud
Got my new ego a few days ago and its amazing....theres not much else to say other because if your reading this you probably already know about an ego. You can pick up a maniac ego for around 650 if your lucky....got mine brand new for 625 off a friend. This is by far the best gun ive used thus far...better then the DM6 and much better then the Etek.