It depends on the settings in both Shortpixel and Cloudflare Enterprise… so it’s really not ideal to make a blanket recommendation here. Shortpixel will give you significantly more control, while Cloudflare Enterprise has other benefits (such as handling .webp serving really well). For an ideal setup, I like to use both — making sure the source images on the server are properly optimized, and then letting Cloudflare optimize further only if it is necessary.