Midjourney is the strongest fit for generating studio-quality product images and device mockups quickly, as it consistently produces polished, photorealistic visuals with fine control over lighting, composition, and style through simple text prompts. Its community and style reference features make it especially practical for iterating on product aesthetics. Flux is worth considering if you prefer a pay-as-you-go API workflow with strong photorealism at a lower entry cost. DALL-E is a solid alternative if you are already using ChatGPT Plus and want image generation built into the same interface. Ideogram edges ahead on text-in-image accuracy, which can matter for mockups that include labels or UI copy.