I'm a user. The PO had a really old version on board, and when I contacted Nobletec regarding an upgrade they said my serial number for the ancient version was probably fine, but they didn't have any records. No problem they said, of course you qualify for the Upgrade Pricing! I was delighted, and am still a user having gone through some further upgrade. I give them brownie points for customer service!
So now using TZ Navigator. Nobletec is owned by MaxSea, in turn 50% owned by Furuno. So perfect compatibility with Furuno. I run TZ on a 24" monitor, usually with a split screen showing Nav one side and radar on the other side. I much prefer using TZ than the Furuno MFD on the flybridge.
Having said all that, I have spent quite a lot on upgrades & radar module to get where I am now. Not particularly happy about all those costs, and I think now it would be cheaper. Were I starting out with a new boat and no systems I would look closely at Coastal Explorer.