with the outstanding Bi-xenons or bright white angel eyes, I would not imagine the headlight washers improving safety by any significant means. you should always brush the snow off your head/tail lights either way when you find your car covered with a layer of snow in the winter time. If you could forego with the rear heated seats, I'd put the funds towards some nice weathertech floor mats
headlight washers aren't even available for us Canadians.