Ignore vague claims like near perfect formatting. Measure reading order correctness, table integrity, caption linkage, and margin collisions on the free sample page of your file.
Print preview still matters for contracts and manuals that will be papered. Screen-only review misses clipped descenders and footer crashes.
Compare two tools on the same page with the same target language. Side-by-side free or trial page one is the fastest vendor shortlist method that still respects engineering reality.
When layout fails, the cost is not only ugly pages. The cost is misread numbers, missed clauses, and support tickets from customers who received a broken manual.
Layout-preserving translation is a productivity feature with quality side effects. It is not a guarantee of print-shop perfection on every exotic vector design - and honest products say so.
If your design team must still open InDesign after translation, measure how many hours remain. Reducing rebuild from eight hours to one is still a win even when the file is not pixel perfect.