Hey John,
I don't think you mentioned what you plan to use the jacket for. Is this a middle, insulating layer that you will wear a shell over? Or will this fleece be the outer layer?
What is the level of physical activity will you be doing while wearing the fleece? Actual work (like chopping), hiking, walking, or just sitting around?
These are pretty important factors. A 300 wt. jacket might be too warm for very active use as an insulating layer in all but the coldest weather. But it could make sense for normal activity in cold weather, or for a low level of activity in moderately cold weather. It depends on how "warm" or "cold" you tend to run. A 200 wt. jacket would be a better insulating layer if you're going to be very active, or a better outer layer if you run warm or will be in more moderate temperatures.
Non-windproof fleece lets the wind right through, and you can get chilled quickly in a cold wind. It works best as an insulating layer under a shell. A windproof fleece jacket tends to be very, very warm. They do not breathe anything like a regular fleece does. If you do lots of physical activity in a windproof fleece jacket, you could wind up sweating gallons. But as an outer layer where you will be only walking or sitting, it could make a lot of sense.
If you will be very active in it, in my experience a windproof fleece vest works better than a jacket. It warms your core while letting your sweat evaporate much more easily. It would be worn in conjunction with a fleece jacket and can be taken on and off. Some windproof jackets may have the windproofing only on the torso area (not positive on this). This might be a good compromise if you're wearing the fleece as your outer layer.
I agree with other posters in the thread on the quality issue: buy the best you can that's in your budget. It will last the longest and give you the most satisfaction. Another source that has good closeouts:
www.sierratradingpost.com.
Johnny
