Any input on Big Agnes Crystal 30?

“Looking at purchasing a BA Crystal 30 down bag. It seems like a great deal. 650-fill down, compresses to 8x8 and weighs a little over 2 lbs, all for only $150. wondering about the generous cut, though- possible cold spots?”

“The crystal is half 650 down and half primaloft.....”

“would this mean the bag would have the drying properties of a synthetic, or would the down sort of negate that?”

“Not sure. Id guess somewhere in between.”