Polos are a batch-size problem
Corporate logo orders often repeat the same design, which can make synchronized heads efficient once quantities are large enough.
But client variety can favor modularity
A shop may handle ten different company logos in one day. Independent heads can run them concurrently while a synchronized multi-head is strongest on one design at a time.
Measure a representative logo
Use the actual stitch count and runtime from a typical left-chest file rather than a generic industry average.
Model seasonal peaks
Uniform renewals and school/team seasons can create short high-load periods. Size against the peak you are committed to serve, not only the annual average.
Keep proofing separate from production
Artwork approval, digitizing and sew-out readiness can delay a job even when machine capacity is available.
Use your own measured data. These guides explain the decision structure. Run the calculators with your actual stitch times, handling times and batch sizes before treating a machine class as a fit.