“Campmor Polartec 200 Fleece jacket”

I have a very similar Columbia fleece jacket (16.5oz). I have seen nothing breathe better than fleece. That helps with sweat management. What will it keep you warm to? You’re right, it is individual but I would say about 50-55F. However, if I put a 3oz windbreaker over it, I stay warm down to 35F.

But like Pika pointed out, there are lighter and warmer options now, but at a cost <img src="/forums/images/graemlins/frown.gif" alt="" />.
I discovered (through ideas from this sight) something warmer, lighter, compacts much more, and almost as breathable.

http://www.montbell.us/products/disp.php?p_id=2301223 The ‘U.L. Thermawrap Action’ breathes through its sides. I love its elastic waist so it hugs you. The extended wrists keep out wind when wearing gloves (a common entrance point). That has been nice. I backpack in this for 30F and above. At camp at 30F, I also don a wind jacket http://www.montbell.us/products/disp.php?cat_id=61&p_id=2303179 and wind pants http://www.montbell.us/products/disp.php?cat_id=63&p_id=2305297 and some down booties (with my sandals <img src="/forums/images/graemlins/smile.gif" alt="" />) and I stay very comfortable; lightweight and warm on a cool night feels great!

-Barry