It's very hard to really judge but I'll put pros and cons here. They both feel substantial so in that sense it's equal. What I mean is they both feel solid and has a good heft.
The Zelos has better crown action and lume is way better.
The Spinnaker on the other hand has nice chamfered edges on the case which is surprisingly nice because it is smooth polish compared to the brushed on the top and sides.
Bezel action on both is good (but definitely different in feel) with with zero backplay on the Zelos and some on the Spinnaker. Spinnaker has a nicer ratcheting sound (but loud).
Overall I would rate them as different as to me the Spinnaker is leaning on the more dressier side and the Zelos 100% on the casual side.