Have lived in Lawrence and Manhattan. Both are really great towns. I will, say, however, that ku students and alum have a respected habit of saying that Lawrence and ku are the best university and town in the US. They apparently have never been to any of the truly great college towns in the US (Oxford, MS, Austin, TX, etc.), and don't realize that Lawrence is much closer in lifestyle and cultural amenities to Manhattan than to the really great college towns. They think ku is a great university because ku tells them that the whole time they are a student there. Most ku grads and alums are too narrow-minded to understand anything different, and ironically, consider themselves broad-minded.
As for Johnson County, ku is truly JCCC west.