i still use rememberthemilk for this purpose. once you get used to all the keyboard shortcuts on their site it becomes a second nature to rock your list.. i love that i can "u" to add url, or "d" to add/remove a date.. j,k to navigate, 1,2,3 to prioritize, email into my inbox, and make some of my lists public.<p>i suppose Trello would be better geared if your lists were shared among multiple people, as that's more of their domain