Off-topic, as it relates to dikduk of t'fila rather than to m'sora: Nusach S'farad says, in sh'mone esre of Shabas and yom tov, "v'samach nafshenu bishuasecha", but, in the b'rachos of the haftara, "sameach t'samach reim". Nusach Haario reverses them: "v'sameach nafshenu" but "samach t'samach reim". Why? Kol tuv, Michael Hamm