Looking to buy a lathe for myself and seeking advice. This will be a first. Budget is around $500. There are a few options at this range:

Jet JWL 1015:Amazon.com: Jet JWL-1015 Wood Working Lathe: Home Improvement

Nova Comet II
Amazon.com: NOVA 46300 Comet II Variable Speed Mini Lathe 2013 Edition, 12-Inch x 16 1/2-Inch, Silver: Home Improvement

Grizzly GO624
Amazon.com: Grizzly G0624 Cast Iron Bench Top Wood Lathe, 10-Inch: Home Improvement


Rikon 70-100 (currently out of stock)
Amazon.com: RIKON 70-100 12-by-16-Inch Mini Lathe: Home Improvement

Not planning to quit my day job but would like a unit to learn on, put out some small projects.
From the beautiful work I see on this sight I trust your expertise and opinions.
Thanks
B.