All of the above is good advice. Out of all the top actions, you really can't make a bad choice. Personally, I run three Bighorn TL2A's (.223R, 6 x 47 Lapua and .308W). I am not a fan of controlled round feed for the type of shooting I do, so I'm not really looking at the TL3. Don't get me wrong, if you are into CRF, the TL3 is probably the top of the heap.
When I chambered my TL2's, they were all so close dimensionally that for giggles, I moved barrels to adjacent actions. Didn't matter which barrel was on which action, they always headspaced the same. That tells me that Bighorn starts the trunion thread in the exact same spot for every action. I was very, very impressed. When I received my first TL2, I very closely inspected it. It was G/D perfect..
I was originally going to go the switch barrel route, but it ended up being more of a pain in the ass than I thought it was worth. Now, I have three barreled actions that I am moving in and out of a Manners T2A and a KRG W3. That will change too, I think I am going to standardize on the Manners T2A. All actions are Jewell triggered. I may try out some of the newer, higher end triggers, but I need to spend less on optics in order to do so.