In 28" or longer, the Sthil Light Bars are by far the lightest out there. They cost more, but you will like it. My Sugi 28" is a lot heavier. Wish I had bought the Stihl instead (in 28" I have the Sugi Light and 2 Stihl Light). Also have two 36" Stihl Light, it is the way to go IMO.
In 20" bars, the Stihl E (not ES) is the way to go. Inexpensive, and almost as Light as a Sugi).
As my Dad used to say "Quality will be remembered long after the price paid is forgotten". I honestly don't remember what I paid for my 044 in Dec 92, and it still runs great and is one of my favorites.