I have extremely minimal time with an impact and own a Zeus and this is what I can tell you.
The Zeus is incredible. The quick change barrel feature is super handy and surprisingly repeatable!! I like this feature for cleaning as well, makes it nice to get into the lug area super easy to clean. The bolt is super smooth and almost closes it self. Bolt lift is heavier then a refined 2 lug but once broken in it’s not much. My stiller has more bolt lift then my terminus for example. The threaded trigger pins is the best way to install a trigger out there and hope more people start doing this.
The impact blew my mind. Was it better.. I wouldn’t say so but it was different. Probably the nicest 2 lug I’ve ever felt. I currently own in my line up, stiller, kelbly, defiance deviant and zermatt/bighorn tl3. The impact feels so smooth and super light bolt lift. The finish looked great. I know one of the next actions will be an impact not for the fact it was better in that initial impression but because I’m trying to get 1 of every top tier action so I can make my own impressions of them. That said after my initial impressions I’ve never been more excited to own a particular action before. It was really nice!
I don’t think you could go wrong no matter what you go with. Both are top tier and amazing actions. Both have strong followers, and both are suppose to superior service. I know Joel from terminus really goes above and beyond. You just have to decide 60 or 90.
LR junky; said it right. The barrel swap is something that is over rated in most situations. It’s a pain having to re zero, and much more convenient to just build multiple rifles when funds allow. The nice thing is when barrels burn its as easy as easy gets to put a nee tube on the Zeus. I wouldn’t sell my Zeus and is currently my favourite action, but hoping to get an impact this year!