I bought the itouchless auto cleaner intelligent floor vac at target for 89.XX. it was 1/2 off cuz someone bought it online and returned it to brick and mortar. they had two. i haven't opened it yet cuz it's my christmas present. now, target has their irobot roomba 400 onsale for 94$. which is the better deal???? does anyone have one of these??? what is your opinion???