I worked at Triumph/Ducati dealer for several years and have put many, many miles on Trophy 12's, Sprint 900 and Speed Triples.
The Trophy is a lot like the Bandit 1200. Huge torque, more comfy and a bit heavier. Awesome wind protection and just a freight train of an engine. I like them a LOT!
The only issues are that the frame is not the stiffest and if the battery runs low, you'll foul the plugs trying to start it, so invest in a Battery Tender.
As a dealer we saw very little in the way of issues, breakdowns, warranty work etc. In fact the only one that comes to mind is a guy with a Daytona 1200 that broke the throttle cable, but I knew this guy and I'm not surprised. To say he was a fast aggressive rider is an understatement!
I'm a big fan of the new Triumphs.