I'm not sure what lathe you have now, or what accessories you have.
I have never used a Nova, and am partial to my Jet 1642; which you might be able to find on sale at the higher end of your range. I also have the basic Jet Mini.
Based on your desired turnings, the new Delta Midi may very well be a good option. I have used one and they are really nice - VS, solid construction, Reverse, etc. I am actually considering upgrading my mini to the midi because there is so much more you can do with it. You could get one of those and have plenty left over for nice accessories like chucks/jaws and a few Thompson tools.
Oh, I think Toolnut currently has a good deal on the Deltas right now, too.
Good luck.