Bring the right project information
Bring opening measurements, photos, finish references, and if possible a floor plan. This helps compare not just individual doors but how a full set will feel through the home.
It is also helpful to know whether you are replacing slabs only or planning a full prehung or custom jamb solution.
What to compare in person
Use the visit to compare edge details, panel depth, surface texture, hinge visibility, and hardware feel. These are hard to evaluate from photos alone and often drive the final preference.
If multiple openings are involved, prioritize consistency of style and finish from room to room rather than choosing each door in isolation.