I sold the quarter zip to buy the full zip when it came out. The full zip isn't as warm, I wish I'd have kept the quarter zip. The full zip is still warm and convenient to get on and off, but I think the quarter zip was considerably warmer.
I went with the full zip. It’s an expensive jacket to only wear when trying to get a pack belt into the pocket. I love it. If I can’t wear my pack with the belt over the jacket instead of through it, I need to exercise more.
Convenience made me do it (full zip). I have zero regrets.
1/4 zip for me all the way. Love to feed my backpack belt through the kangaroo pocket. Outweighs ease of on/off. I don’t know about warmth. The 1/4 is the warmest jacket you will ever wear. It’s a below zero type garment.
Sold the 1/4 zip for the full zip and never have regretted it. I haven’t noticed that it is colder. It does allow you to open it up and cool down when your active. It is also cut a little longer on the back. I like not having a hood that zips on and off too.