Both too cheap. Why spend that money for a 'learning' unit, only to spend more money again later for a 'production' unit. Then you will have to reteach yourself anyway because not all welders actthe same way, they all have their little 'quirks'.
Always use this motto: Spend as much as you can possibly afford on tools. It's a capital expenditure and will pay for itself many many times over the years. If you buy junk, it will cost more in both $$$ and agravation. Just ask Owen. He, and his 10 lb sledge and Craftsman welder are well know around here.
If you can't afford a decent one, and don't plan to do much welding, then rent one. If you dom plan to do a lot of welding, then drop the $$$ on a good unit.
Yes, you can teach yourself. Just have someone who can weld well give you some pointers, or get a book. Harbor Freght has a nice one.
Tim