We produce and use all three plate types here (KF95, KF152, and KM152). I prefer the KF95 (standard relief Boxcar-style plate) for the Heidelberg Windmill because it’s easiest to use, and I really like the gridded Boxcar bases. It makes positioning a snap. Plus, I don’t have to worry about plates shifting during a press run or curling when being removed from the base after printing (which can happen with steel back plates).
For older letterpresses (such as C&Ps) which have worn rails and form rollers, deep relief plates are better (KF152). They require a deep relief Boxcar base. Many of our C&P clients love the KF152 plates.
We’ve done tests with clients where we plate the same file on all the different plate material types. Feedback seems that print quality is the same, but each client has his or her own preference, often preferring the first plate material type they learned to use.
Hope this helps!
Lars.