Mike, I have not used the Patagonia Down Sweater, but there is a review of it by BPL: http://www.backpackinglight.com/cgi-bin/backpackinglight/patagonia_down_sweater_spotlite_review.html
Yes, I did review the older model, and mentioned that in the review. That often happens with product reviews, so we have to weigh the pros and cons. Far too often the product gets heavier rather than lighter.
Richard, the Montbell UL Tec Down Jacket is a very good comparison to TNF Thunder Jacket; thanks for pointing that out.