Think OS, Magnum and ASP. Different logos, and some differences, but with a quick look, you can't tell them apart.

Look closely at the HF lathe. I didn't see the second chuck or the steady or follower rest. One of the others had some live centers, etc.
Basicly, there are different sets of goodies that come with the basic lathe. Some of the things, you will only seldom use, but when you need it, you need it.

One thing you will absolutely need is a four jaw chuck.

Before you jump, spend a few days going over the post in the 9x20 group. It will be time well spent.

One last thing, be ready to spend another $300 or so for some decient measuring tools, Micrometors, 0-1, 1-2, and 2-3, Dept Micrometers, telescope gages, Dial test indicator, and a good 1" travel dial indicator (2" is better). Then there is the actual tooling. Again, the 9x20 group will have some good info on HSS vs Carbide bits. center drils, etc. These things are like a sail boat, the hull is cheap, but the rigging will drive you to the poor house. If a fun trip though.

Don