Here is a list we compiled few months ago,
under 1kg:
------- Model --------- Weight ---- Style ---- Comfort --Fill -------- Size ------------ Price usd$$
1. Down blanket ----- 196g ------ quilt ------- 13c?? --- 650 ---- 60 x 40in --$ 72,
Monbell
2. Magic 125 zip ----- 285g ------ bag/quilt --- 13c --- 850 ------ std --------$175,
Cumulus
3. Yeti passion ------- 320g ------ bag/quilt --- 15c ---- 850 ------ std -------$350,
outdoorfair
4. Zpacks 900 ------- 323g ------- bag/quilt ---- 5c ---- 900 ------ std ------$350,
zpacks
5. Spark spl ---------- 348g ------- bag --------- 12c ---- 850 -------std ------$299,
submithut
6. Traveller TR1 ----- 389g ------- bag/quilt -- 14c ---- 750 ------- std ------- $220,
Lacordee
7. Western everlite -- 400g ------- bag -------- 7c ----- xxx --------std ------- $295,
Backcountry
8. Shenandoah ------ 430g ------- quilt -------- 7c ----- 800 -------std ------- $180,
jacksrbetter
9. Down Hugger ----- 461g ------- bag --------- 8c -----900 ------- std ------- $420,
montbell
10. Atlus superlight -- 600g ------- bag -------- 14c ---- synthetic -- std ------ $ 60,
ferrovicmar
11. Baikal 750 -------- 613g -------- bag -------- 9c ---- synthetic ---std ------ $ xx,
millet
12.Flicker nano quilt - 624g ------- quilt ------ 4.5c ---- 850 ------- std ------ $229
fetheredfriends
13. Traveller 50 ------- 650g ------- bag ------- 11c ---- synthetic ---std ------ $50,
Mt warehouse
14. Quechua ---------- 700g ------- bag -------- 15c --- synthetic ---std ------$ 80,
decathelon
15. EMS Boreal 40 --- 805g ------- bag -------- 4.5c --- synthetic ---std ------$160,
ems
16. Cooper-7 ---------- 950g ------- Rectangle -- 7c ---- synthetic ---std ----- $ 70,
hotcore