You really need something with a tank, otherwise air can pulse, which will make airflow inconsistent. It also means it will run continuously and will likely overheat, which will cause it to cut out until it cools again.
Is noise an issue?? If not then you are better off getting a regular compressor from a D.I.Y/hardwear shop etc. They are loud, but it is the cheapest option - and if you are handy you could reduce the noise by making a box etc ( making sure not to affect aorflow etc) just make sure it has a water trap and regulator. A few people have even replaced motors for fridge ones.
If noise is an issue then unfortunately that means it gets more expensive. I have the noisy kind, but hopefully someone can advise a good model once they know where you are and what's available near you.