I have a new regular length ultra 20 that weighs 18.5oz without the straps and 19.1 with them. At 6'1" you may want others to chime in and verify that a regular works at 1" over.
I purchased this when I heard the specs on the 2010 Golite 3 season quilt. I even purchased a 2010 to make sure that it wasn't a mistake, but it did weigh in at 1 lb 9.5oz. It did have more loft but not enough to justify the extra weight and considerably more bulk due to the "eco" fabrics and tricot baffle material.
This Golite that I am offering is my second as I have one that I have been using for the past year or so that I am saving for my son. He should be about on the verge of an extreme growth spurt. Without extra clothes the Ultra 20 is a solid 30 degree bag and I have had it down to 20 or so augmented with the clothing I normally have with me.
I am looking to get $180 for the bag including shipping which is what I paid for the bag. It was a local deal where I went through the retailer's inventory of 9 bags to pick the best one.