Welcome to the "I get cold easy" brotherhood Chris! I've tried every pair of boots my budget would allow for many years and finally found something that worked for me 2 years ago. I bought a pair of LaCrosse Alphaburly sport side-zip 1200grm rubber boots from Don Wilson. I got them about a half size too big, I use a cabela's outfitter liner sock, a merino wool oversock and when it's in the teens (like at Don's in Jan) I put toe warmer on each liner sock. My feet are warm and dry under any condition, not even a bit of discomfort with this setup even all day. The side zipper is absolutely the deal too, can't imagine having rubber boots without it now. One constant I have found, make sure the boots aren't too tight...either in the foot or ankle/leg area. The best insulated boots in the world won't do a bit of good if they are too tight.
By the way, I've got a pair of insulated Danner's on their 3rd sole and though I love them dearly and wear them 90% of the time in warm weather, I would never consider them a cold weather boot.