The dart was very efficient but no longer produced. Maybe you can find a second hand one. I had one amd rank it up with a setting 6 rex ambassador or stirling stainless STI turned out to be one of those rare people who doesn't love the Blackbird Ti as well. Ordered one on May 15th, gave it a solid 20 or so shaves and ended up sending it back late last week. Appreciate Shane's customer service. I really like the look and feel of the BB and the weight, but I kept having to make more passes than my face (and time management) appreciate. I tried it with several blades (Feather yellow is my go-to, Kai, Nacet, the blades they ship with it. Never got it where I needed it. I strongly prefer a more aggressive razor, basically.
Happy to have tried it, and I really wanted to like it, but couldn't justify keeping it. Basically the same thing happened with the Vector. I may end up giving the Era a try when it is released if they start offering a base plate combination that ups the efficiency.
I had some curiosity about the Henson Ti with the aggressive plates, since someone mentioned their razors earlier, but even if they come back in stock, I am thinking that probably isn't going to be anywhere near the efficiency I am seeking.