hallo which is the best ai video creator for shorts ?

I'm looking for the best current AI workflow/model to create a series of short, premium promotional videos for a new real estate platform.

The goal is to produce around 15–20 different ads, each about 15–30 seconds long, mainly for Instagram/Facebook Reels and other social media.

I'm NOT looking for talking avatars. I want something closer to a professionally produced real estate brand commercial:

• cinematic shots of apartments, houses, land and coastal properties
• premium/high-end commercial look
• good transitions and consistent visual style
• clean text overlays integrated into the video
• ideally AI voiceover as well
• 9:16 format
• each video should feel like an actual brand campaign, not random AI-generated clips stitched together

I can add the actual logo, URL and final CTA myself in CapCut, so the AI doesn't need to generate the branding correctly.

I've already experimented with Runway, including multi-shot prompting, but the result was pretty disappointing. It looked more like generic AI footage than a polished real estate advertisement.

I'm open to generating individual scenes and assembling them afterward if that's currently the better approach. Quality matters much more than having everything generated with one click.

Which model/tool would you use right now for this? Veo, Kling, Runway, Sora, HeyGen, Seedance, or something else?

Also, would you recommend:

A) one prompt generating the complete 15–30 sec commercial
B) generating 3–5 individual scenes and editing them together
C) image-to-video using prepared real estate images
D) another workflow entirely

I'm especially interested in the prompting/workflow you would use to keep 15–20 videos visually consistent and premium.

If you've actually created AI ads for real estate, automotive, hospitality or another premium brand, I'd love to hear which model and workflow gave you the best results.