I have had a Columbia Vertex ski parka for 10+ years. It wasn't cheap, but the design is perfect for the intended use. It is comfortable and toasty warm. It has features such as zips under the armpits for extra ventilation, double-ended main zip for unzipping the lower part when riding chairlifts, pockets for goggles and iPod, clip for keys, clip for attaching gloves and so on. A feature I particularly appreciate is an elasticized skirt that keeps loose snow from getting underneath the parka and around the chest area. As I said, for skiing, the design is perfect.

The parka has seen heaps of days of downhill skiing and general wear. It has been to NZ, Egypt, Jordan, Greece, Turkey, Italy ++. It's an "old friend".
Recently, the main zip became a bit erratic. The sides would separate, and it was a bit fiddly to get them back together. With the associated memories, I didn't want to chuck the thing away and buy a replacement. I took it to a ski shop (here in Canberra) and requested that the zip be replaced at my expense.
I was informed today that Columbia will replace the zip UNDER WARRANTY, no questions asked, no receipts required. For a more than 10 year old product, and in this day and age, I find this attitude to customer service amazing and refreshing.
My mother would say "If you can't afford a good one, son, save until you can". I suggest there's a lesson there for us all.