Choosing a booklet maker for a digital print workflow

A digital press changes the shape of the work. Runs get shorter, jobs change more often, and the press is fast enough that finishing stops being a background task and becomes the thing that decides whether a job ships on time.
Changeover time beats running speed
On a 300-copy run, setup dominates. If a machine takes twenty minutes to change between a 24-page and a 48-page job, that is twenty minutes charged against a job that may run for fifteen. Cycle speed matters far less than how quickly the machine can be reset — which is why the sensible comparison is not "books per hour" but "time from job card to first good booklet".
See also Choosing a booklet maker for menu printing
This is also why a machine with fewer, simpler adjustments tends to win in digital shops, even when a higher-specification machine is available for similar money.
Trimming matters more than it looks
Digital output and folded sections do not always agree. Thermal and inkjet sheets can creep differently from litho stock, so a folded booklet often shows a ragged face edge that a litho shop would not see. An in-line front trimmer squares that edge inside the same pass, which removes both the separate guillotine trip and the re-registration that goes with it.
For a digital shop running many short jobs, this is usually the single highest-value add-on — the step it removes is the one that eats the operator time.
Cover feeding earns its place when covers differ from the body
Digital shops often print covers on a heavier stock, or on a different device entirely. Hand-feeding those covers is repetitive work that has to be done at the machine. An automatic cover feeder removes it and lets one operator run the booklet maker alongside another task.
If your covers come off the same press as the body and are the same weight, the feeder is optional. If they do not, it pays for itself quickly.
What to look for, in one line each
Short changeover. In-line face trimming. Cover feeding if your covers differ. And a modular platform, because digital work mixes keep shifting and you will want to add the next step without replacing the machine you already own.