I shot on both, both great cameras. If your aim is buying, I would consider a few things:
1: RED Dragon is about half the price, even after adding accessories which could clear some money to buy lenses!
2: Dragon shoots 6K which could be handy for composing in post.
3 : Dragon is much smaller camera, making it suitable for all kind of light weight rigs etc.
1: it's the industry standard.
2: better highlight rendering.
3: smother and easier post workflow with ProRes.
Last thing, did you consider an Amira? With the UHD upgrade it got + new ProRes Codec, it's actually the prefect camera for TV commercials and short films, it's much lighter and a joy to use, it's around the same price point of Dragon but it's a true pick up and shoot camera, I'm kinda of in love with it.
Also it really depends on your market and what people like to use and also which camera feel more comfortable to you and which look you like better. This is why I prefer renting, as you choose the camera for the project.
just my 2.
p.s - probably someone will tell you that you need to write your REAL first and family name per forum rules.