This is a big hole to jump into. I have a Nucleus. I also have many other actions, and shoot at one time or other most of the major brands out there. Thinks I like about the Nucleus, can easily rebarrel because of the savage style barrel, easy to change bolt heads for different calibers. Yes other actions do this too. There are some other cool stuff too like the 60 bolt through 3 locking lugs, so the handle doesn't come close to the scope. With that said if you shoot enough different actions you will find they are more similar than different. I found the Nucleus a little clunky. My advice for you would be to look at the Defiance (a higher end one) or an impact. They are about 300 more I think but worth the extra. In the end you need to decide which features you really want. If a switch barrel that you can order any barrel maker, get a Nucleus.