I would say the TC Triumph with out a doubt, I have 17 now and have had many in the past and worked on them for other people when I had the shop.
The Triumph is the easy to clean, simple with few parts and not much if any blowbackevery one I have handled has had a good to excellant trigger, and they seem to have a preferance for certain loads.
I am posting a target, it is the best target I have ever shot at 100yds, it was shot at Cleborn county shooting club. I have a .270 and a 6mm

6 and a 223 varmit rifles and have never matched this target with any of them.
This is not my normal group but most of the time I known that I have not done my best I am over 70 and dont see and shoot as good and consistantly as I did when I was shooting compitition. I often wonder what the gun would do if it was shot with out any human error.
The load was a 250gr Shock Wave with a short black Harvester sabot and a 120gr Blackhorn. It has a Nikon Omega scope on it.
To put things in perspective my average group with this load is .78 and when conditions are bad or I goof a bit it often goes up to 1.25 for a group.
I just shot one of those 1.25 groups day before yesterday the load I shot the first shot with had been in the gun for 3 weeks hunting and it went right where it should but the next one I knew was low when the gun went off. Lee