I've used KYB struts/shocks for years and never had any quality issues. The ride is firm but not punishing. You trade a little comfort for better handling. My only issue with any strut maker is that I wish they would include the lower rubber insulator for the spring as those as usually well worn.
Replaced the shock part of struts on my lexus es 300, kept the original springs and put new mounts, front and back. Front mounts are lexus and rear are KYB. I am very happy with the ride. ( All shocks are KYB ) Firmed up just a little, which the old '98 needed.