Stick with the well known brands.. ie Musto Helly Hanson. They have done a lot of research into comfy ,well breathing, warm,[ waterproof gear... so buy the best you can afford.
Why just the jacket.. you will need pants and seaboots also.
Not sure what you mean by " winter " presume you are talking Canada time, hence you will be down here ( South Pacific) in Summer. Better sailing and hopefully not a lot of wet weather gear required . But then again I have struck some bad times out there.
Remember TONS of sunblock ( we use pink zink a lot)