I and the wife have apex 233 ones (mine is wide long {6'2", 100kg, beer gut, should be 85-90kg}, wifes is short wide {5'4", good luck getting owt else out of me}).
No baffles, imagine a bit of loft insulation surrounded by material (I assume the insulation bis stitched into place at the edges of the quilt so it doesn't move about). Lack of baffle stitching is good, means the insulation is even all over.
Think their ratings are based on climashield's ratings for the insulation material. Fair enough choice imo. Think 233 is -3°c, probs about right (with baselayers, and a hat if chilly) for comfort limit if I blend mine and her experiences together. Bare in mind, if you get wider than you normally would, you can convert it into a narrow bag and sleep with the seem under you. And roast in zero ambient, in my wife's experience of that
My 233 wide long compresses in a 15l to 8l (from memory) compression sack and ends up a little bit bigger than my alpkit pipedream 400 long in its compression sack. Weighs about 950g with the pad straps (which are grosjean poppers, and a bit of a 3 minute faff if you put the straps on the wrong way).