Just a week old and my E 20 hours on it. I'll add more as it breaks in, or doesn't.
I heard this cart at a friends house and was sold. I've heard the 440 and had a 150MLX. The stylus broke on the 150. Didn't care for the sound of either. For me, too bright. Others love it. The OC9 has a big full sound top to bottom. Lots of depth and very fluid and easy to listen to. The first thing that struck me when I heard it was the separation, if the recording is good, this spreads it out very well.
I haven't listened to many different things, same few songs over and over and over dialing it in. That and learning a new pre. After throwing more random stuff at it, I'll add more.