they've got amazing simplicity, and done client-side so instant response (remembers you with cookies, but seems to be no server storage). But you have to do the tasks in strict order, and you have to finish it before moving on (you can't just "make progress").
whatshallidonow changes the order. it has a "made progress" button. it would be nice if it had a button "skip - I don't want to do this one right now!". (tho you can achieve that effect by reloading, ctrl-r).
That quote is not just encouraging, it's also literally true (unless your market is >50% saturated). Plus, no two products are ever identical (whatshallidonow is a slightly different idea), and no two users are either: some like yours. However, I agree there are benefits to being first, #1, etc (and it's more exciting).