I'm looking to buy one and start working on my film portfolio and I would like to get a standard cheap ass ENG camera

any suggestions? brands?

also, website and where they sell used cameras would very helpful

There is a "co-op" of sorts in my city where you pay a flat rate and have access to all the equipment that they have. They have some good equipment too. Cameras, mics, etc. You should look into something like that.