150fighter
I have been doing my research for the last few month on exactly what you are looking for. So here it is
Everyone I talk to says that Western Mountaineering is one of the best bags you can get and when compared to the likes of Marmot, North Face, Mountain Hardwear, REI etc there is none that can match. Many of these bags are made in other countries and filled in the US. The WM is all made here!!
So first I wanted some light, 0F, and big as I want plenty of room. There are two the fit the Bill, WM has one called the Kodiak Super MF that weigh in at 2lb, 15oz for a 0 degree, 6'6", and has 67" of shoulder girth and 41" foot girth ($435). The other is the Couloir EQ long, this weighs in at 3lb 12oz, 0 degree and has 64" shoulder and 42" foot girth for the 6' 6" model($489).
So the next big question is do you need a long? Many add about 4-6oz to the total weight for this, but I have been told if you are close to 6' go with the bigger so you can put sock or pants in the bottom or just have the extra room--your call but I am 5 11" and it felt much better for the bigger one.
I am also about 220lb and even if I was 190lb--I like the extra girth to move around in and it is worth the extra 4-5oz for this compared to other lighter models.
The last thing is do you go with a DryLoft version or a coated version. Some do not make the DRYloft anymore because it adds 4-6 oz to the bag and that you can be in a situation where the vapor does not go through and thus it will freeze (extreme cold) or you have more vapor IN the bag. Keep in mind that the more liners in the bag (DL is a extra membrane added)the more layers vapor has to pass through. The other option is a higher thread count outside (WM has 400+)and a water repelent coating added. Breaths better and lighter. One thing someone asked me is how many times have I ever gotten my bag wet--NONE so what the DL. Good question and I think some of the bag makers use this fear to sell this feature--which is an extra $100 usually.
By the way you can find some of these bags on eBay if you catch it just right. There is a nice Couloir on right now for $82. It does not have the coating on it (EQ), but still would be a steal for anything less than a couple of houndred dollars.
So i hope this helps.