For consistent white-background e‑commerce shots I’d lean Leonardo AI for its inpainting and batch/variant controls; use Midjourney only if you need stylized premium art. Create a fixed prompt template (camera, focal length, lighting, white background, material spec, SKU ID) and lock seeds/masks per SKU. Batch: generate base, apply inpainting masks for variants, QC and minor Photoshop touchups. Use ChatGPT to standardize prompt templates and filenames. See a direct comparison here: Compare Midjourney and Leonardo AI