19" tires are pricy for winters cause there is only a few to pick from. Most of the guys, (i think) have gone to 18" for winter cause it's pretty cheap considering, i for example, found a use set of 350Z track wheels, 18's for 600 and tires were about 450 for the 4. now i don't have to swap rubber every 6 months
keep in mind i'm in Canada so you maybe able to find wheels and tires even cheaper.