I have the Delta lathe. It was initially recommend to me, I did a lot of research on it and the Jet. The Delta, in my opinion edged out the Jet with easier belt changes, a wider belt, and the ability to run in reverse made it the better of the two choices. With the extra bed extension you can do longer turnings, such as table legs. For someone starting out, it is a lathe that will grow as your skill will grow.
The reality of turning is that over time, the cost isn't the lathe itself. It is all the accessories, tools, and other equipment that goes along with it. That said, unless you buy a large 24" lathe today, the one you buy now is very likely not going to be your last lathe you own.
A note for the speed, just because you have it well cut out the bandsaw, you still want to start a bowl blank at the lowest speed possible, slowly rev the speed up till the lathe starts to vibrate, the back it down a bit. While you can get pretty close on the bandsaw, the work piece will still be out of balance, and you may find 600 RPMs, even on the heavier machine, is too much.