You said you got a great deal on it.. So, dollar wise, what you got and could have gotten is unknown to us.... And many folks on here are down users. I don't use down because allergies. Least it could be coincidence that I sneezed when i tried on a down in the store.. If you're comfortable with the jacket and think it keep you warm, then by all mean keep it.

I'm still using the same Marmot Caldron jacket I got in 2011. It's the only synthetic insulated jacket I own and have used.. I probably buy another one for next year. And what brand might that be? I have no clue. Maybe Patagonia Nano Puff with a hood. Or another brand with a hood.

Edit: Only way you can tell the warmth and weight comparison, is compared the weight of the insulation material vs. another brand in the same price range.