Gazatteer,
The second one looks somewhat promising, but pictures can be very deceptive, so I am very reticent to give a recommendation on anything!
Like I stated and Babba has also pointed out, I would bribe a knowledgeable individual to come with you.
Additionally, you need to be patient, and be willing to walk away from your "dream machine".....
if it is not what you want.
I would also look/inquire with your nearest model engineering group.
I would also ask HERE as there are something like 5000 members!
The Model Engineering forum would also be a good place to stop and check out.
I would not buy a clapped out Myford because it's a Myford. A good machinist can work around the short comings of a worn out lathe, but I dare say it's not fair to have a novice work like that. Make sure what ever lathe you get is in good shape. You will have enough of a project learning how to use and take care of a good one, never mind a worn one.
Check the centers sockets for scores from the centers being spun.
Check for wear on the bed near the chuck. This is very common.
Look for signs of the cross slide being run into the chuck....that happens a lot....though not generally fatal, it may give an indication of how well the lathe was taken care of. ( kind of like looking at a used car and all four fenders are stove in....goes down the road good....but what else is wrong?)
Dings and dents in the ways or any where else
Mollyhocked wiring or "improvements"..... :
Most importantly, go with someone for the first 1 or 2 lathes you look at and have them teach you what to look for. Then you will know how to fish..... ;D
Dave