Among those I’d start by looking at models from Bettinardi Evnroll SeeMore Happy and Bloodline. Each of these companies make high-quality products at varying price points. Furthermore they can perform exceptionally well provided you find one that fits your stroke eye and feel preference.
Start at address so you can ensure that you have a flatstick that fits your body and posture. Unlike full-swing clubs that droop and bend significantly in a dynamic motion putters stay about the same during the stroke so getting a length and loft that complement your setup is an important first step.
Because the Z U85 features a more iron-like design than typical hybrid clubs it can easily be blended with the other Z irons for a truly customized set. Lofts available include 18° 20° 23° 26° and 29° all with UST Recoil 95 graphite shafts as standard.