I just realized that after starting this thread, I never did come back to it and offer my own opinions. Well, part of the reason has to do with something that was touched upon by a few of you. . . Noodler's. I was one of the biggest Noodler's fans around, had more Noodler's than anything else, and was usually quick to jump to Noodler's defense when some of the silly things were said about it. However. . .
Recently I find the lack of consistency has become too severe. Opening a new bottle of Noodler's has become sort of like rolling the dice. I just don't know what it's going to be. I don't know what's the cause, and I don't ascribe any blame. However, that's what prompted me to start this. I'm thinking about where I go in the post-Noodler's era.
Luckily, it seems we live in the golden age of ink, and there are plenty of options.
I see a lot of you have named Pilot (Iroshizuku), Diamine and Herbin, which correlates well with my experience.
Not many have named Monteverde, Robert Oster or Colorverse, which I suspect is mostly because they are newer brands. When it comes to "most trusted", I do think most of us prefer a long and well established track record. I am optimistic towards Monteverde in particular, though. They are an established pen manufacturer, they have their "ITF" formula, and Horizon Blue is an impressive PPS clone.