I have PT on a HED C2 and it has been all you are hoping for: smooth, durable and provides consistent power. And it is the discontinued PT Pro, which is heavier, clunkier looking and had worse geometry than the G3 (although I don't know their 11sp geo).

That said, if I had money to consider Enves I would go straight to a crank based PM. As it is, I have switched to a Quarq on my race bike and put my PT on my wife's bike (although she doesn't know it). I like the option of being able to switch wheels and still have power. And with Stages and P2M now available, the crank based market is better than ever.