I just bought "010101001" (from a friend here) and man, I'm just.... I already had and liked The Source and The Human Equation, but this really resonated. I really dig the way Arjen weaves the voices in and out. It seemed so much like a gimmick when I first got introduced to Ayreon, but it's not. Maybe it has soemthing to do with the initial listen had James LaBrie on there (who I obviously love from Dream Theater) but while I know most of the singers, I'm not invested in their main work as much so it's not jarring. But on this it sounds so good.
By the way, I seem to remember some talk about Jorn Lande, and I don't remember it being all favorable, but man, his voice is golden and smooth; I thought it was David Coverdale when I first heard it here. And with Anneke, one of my favorites, on "Comatose", it's perfect.