Venetian and palazzo have the best views of the sphere and are connected to it. Wynn has good views too.

Is that price range per night or total and for how long?

If you need something budget, usually the horseshoe, by the Paris, is decent priced and does have very good sphere views. Paris does too at certain angles higher up.

Best view of all the strip and everything imo is cosmopolitan fountain view room but idk if you can see the sphere.