NOVA chucks have been the most affordable and versatile chucks with the biggest variety of faceplates available. Those have since been replaced with the Rikon chucks, same quality and compatible with ALL of the NOVA faceplates. If you can't find a NOVA, get a Rikon as they are basically the same thing because Rikon released their, basically, identical chucks around the time NOVA North American closed out. Pure coincidence.
If you want to spend a more, go with the Easy Wood Tools chuck. But truthfully, for a mid sized lathe and all of the turning possibilities, the NOVA or Rikon chucks will be perfectly suited and the most affordable option. No real need to spend more money.