If you do get a Nova, make sure to get one of the packages with thicker jaws- the top surface of the jaws actually has a lot more to do with holding power than most people realize and I find Nova's standard jaws to be very lacking in this regard (they are very thin).

These are the kind of jaws I'm talking about, this set is better (much thicker) than Nova's standard set: https://www.amazon.com/NOVA-JS100N-100mm-Chuck-Accessory/dp/B0064JJCFK

If you can afford the extra for Vicmarc or Axminster, they are both quite a bit better.