Probably not going to be a popular opinion, but I would look at the T/C Triumph .50 seriously before i invested.
Sorry to say it, but I've owned a lot of T/Cs and a lot of Knights, and the T/C wins on accuracy & customer service. Probaby a lot of conflicting stories to mine, but I'm just speaking from personal experience.
When I call customer service because the screws furnished with a set of sights are too long I don't expect to be told, "Just file 'em off.", and that was what happened on my last call to Knight.