The Y series has the NEC chip-set which isn't considered by many to be very reliable scanners
but if you want something that is comparable in scanning abilities to the iHAS324 Y then your
best bet would be the iHAS124-04 Y out of the 3 on your list.
But if you want a reliable scanner then I would pick either of the B drives as they will have the
MTK chip-set which is considered to be very reliable on scanning.