I have had a pa racing k member for years and never had an issue with it. Its the chromoly k member with adjustable a arms. I inspect it every year, never any issues and i street drive it.
I think at this point every k-member you buy new these days are good. The early upr ones had some clearance issues and some of the other box style members were wack but other than that the current upr, team z, granatelli, pa, or maximum motorsports members work great from what Ive gathered.