Mike,
I would suggest the Cabelas Classic Ragg Wool sweaters that run around $30...I have two of them, both in Tobacco color...Of the two one is running on around 5 years of heavy use and is still in top condition...One is always folded in a dry bag under the bow just in case...The sweaters are only 80% wool but they exceptionally warm for the price...I hunt most of the season without my jacket on just wear the sweater with the a layer of cabelas silk, wool light or mid weight thermals, my favorite hunting polo with the the sweater over top...There has been only a few cases over this season where I have had to wear my jacket which was during early season when we got drizzle and here recently in the past two weeks when the weather had dipped down to 20 degrees and below...If you will wait till the spring months the sweaters are typically on clearance for around $20...
5 minutes in a hunt on December 6th this year, I tripped on a no-see-um in about 2 feet of water...Both arms went in with my gun to catch myself...The wind was blowing pretty heavily and the temperatures was in the mid to low 30s...I stripped all my top layers off and rung as much water as I could...Put it all back on with the second sweater on top and hunted the rest of the afternoon...A little cool at first but after about 10 minutes I warmed up to well within a temperature I was comfortable with...Probably not the smartest thing to do but I was also only 2 minutes from the ramp with three other guys hunting that day...
If you have some cash to spend I do recommend the windshear...The only negative side is that the system does exactly what it supposed to do...It keeps the wind out which doesn't help regulate your body temperature as well as standard sweater...On some days when you are active even it colder weather you sweat way too much...Sweat is the ultimate cause I getting cold...If you are not too active they are great...My stepfather swears by his...But he also takes a four wheeler out the heated concrete blind and climbs in, shortly taking it off and setting it on the back of the chair because the heater base board heater is too warm...He doesn't do much free lance hunting anymore...
Regards,
Kristan