I agree that Jens is a natural when it comes to commentating. The guy seems like a free spirit who likes to just shoot the schit while talking about a bike race. And as you said, he's not afraid to admit mistakes. That's awesome. He realizes we're talking about a bike race, not impending armageddon. No biggie.I am really starting to love Jens Voigt. Half of the time he talks nonsense, but he just has an emotional, benevolent, appreciating style, is never afraid to admit mistakes or tell the truth about a rider (in a very nice way). It makes a time trial commentary way more lively, nothing you wouldn't know, but it's nice to have in the background and it seems to come easy to him.
Chris Horner is the same. He's a story teller with knowledge about what's going on. The fact he adds examples of behind the scenes riders who may or may not be training or may or may not know how to ride a bike is a bonus. You can't ask for anything more (except for candid talk about you-know-what. But we all know that's not going to happen.)