I voted for the Z6 1-6. It would be my first choice too, but I completely agree that $2k is too much for any scope. You should be able to find a non-illuminated Z6 for around $1400+/-, but I just bought two Swarovski 1.25-4x24mm illuminated scopes for under $1500. They are first focal plane but are great scopes.
I also have a Z6i 1.7-10, and it is my favorite scope of any I have ever owned.
If you want an "economy" scope, I have been using a Leupold VX-III 1.5-5 illuminated on my hog rifle for a few years now, and it is a great low light scope for the money.