I had both the OE and NE at the same time kept the OE, sent the NE down the road. I liked the OE because it was more like my 242XP, small, light and fast. If I want 50cc I go to my Poulan 3000 or a 5100S. Great saw, I predict it will not be the 'backup' for long!
I have an OE as well, wouldn't trade it for anything! I saw (I pun lol) real quick after running it why everyone talks about them. Great saws.