Kahles is known for perfect tracking. Mine has been spot on out past 1400 yards. Turrets are very good, tactile and audible, just barely muted compared to ZCO.
Getting used to the top parallax is different. I had a K624i for years, so it is not totally foreign.
Glass is on par with NF ATACR glass in my opinion. My old K624i has some CA, but I don't see the same effect in the K318i. It is there just a bit, but not like the older glass. Plus, I don't shoot at zebras or skunks often, and it is not noticeable to me unless shooting at black and white targets. The glass is not as good as ZCO or TT, but I got mine for $2k, so for 54% of the cost of a new ZCO 420, I can live with the slightly lesser glass.