Well, I just grabbed this lens as my first real fuji lens. I spent much deliberation, so much it was sucking fun out of it, and I was really close to doing the F2 version to keep this kit smaller And cheaper, but I got an allegedly mint one for $75 more than the F2 so I did it.
I have poured over reviews, and they all would have you getting the new F2 in a heartbeat, so I hope I made The right call here. I love my art50, but I am not a clinically perfect lens guy, hell I like m42 glass, but for me, there is no substitute or workaround for speed, and I really wanted a native 1.4 lens in an FL I can use a lot.
The shots in this thread made me feel good about pulling the trigger.