No 16x line. That's really the only fault I've found with mine.
Using it for field target, Open class
Tracking, repeatability etc has been perfect. Strapped the thing to a big heavy butcher block when I first got it and did some variations of the box test while changing powers and side wheel. Nothing I did could induce a shift in its ability to track and return to zero.
Looked through it next to it's cousin Sightron and liked what I saw better with the x50. Also looked through a friend's Khales and thought the X50 was more clear. That was before I bought the falcon too, when I was still considering what scope I wanted to buy. So no bias of trying to justify where I chose to spend my money at the time of looking through the Khales.
The only time I thought I was having scope troubles was at a match earlier this month when I got off a revolution. I was blaming the scope but upon further investigation, figured out it was operator error.
I'd recommend one, after using it now for around six or seven months.
Got another gun coming and trying to justify buying another X50 to go on it actually.