Knowing that I am not really a Delta fan and accepting that I was after the Steel City when I got a great deal on the 17-950 . . . . I would move on. However; the table sure makes up for a lot of sins. I really like it. I added a Woodpecker table to it (the one they quit making . . . I don't get that?) and would find it hard to be happier with the table's capability.
Now, having said all that, my dad got the Delta 17-959 when Woodcraft had it on sale and it is a different class of machine. It appears to be the entry level into the next tier for Delta. Still has the cool-eddie table features but is much more heavy duty than mine. Threaded stop system, heavier . . . everything, you get the idea.
The Steel City (and others) are very nice machines but I use the heck out of all the tilting features on the table and would be loath to give it up.
Any sufficiently advanced technology is indistinguishable from magic.
- Arthur C. Clarke